Document

1K.L.E’s B.C.A LIBRARY MANAGEMENT SYSTEM

ACKNOWLEDGEMENT

I present with pride the project “Library Management System” towards the

partial fulfillment of the requirement for the award of the Degree of Bachelor of

Computer applications of Karnataka University, Dharwad.

The satisfaction that accompanies the success of any work would be incomplete

without naming the people who made it possible, whose constant guidance and

encouragement made this task successful.

I express my sincere gratitude to our Principal Prof.S.Kotrappa who has been the

source of motivation for providing the facilities for the successful completion of the

project. He also made this monstrous task successful by providing constant inspiration,

encouragement, timely guidance and valuable solutions.

I also express my sincere gratitude to my guide Prof.S.Kotrappa who has been the

source of motivation and to guide me in this project.

I consider the encouragement of the staff members and also lab staff extended

behind the scene worth acknowledging.

Last but not the least I owe my debts to my parents, friends and all those who

directly or indirectly have helped me to make the project a success.

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K.L.E.Society’s College of Bachelor of Computer ApplicationR.L.Science Institute, Belgaum 2007-2008


ABSTRACT

The project aims at computerization process of a Library. In library, there are

multiple transactions taking place which includes adding, deleting, issuing, returning,

etc., of books/magazines among members. Computerization of these activities results in

more reliable, accurate and faster processing over manual transactions.

Study of existing manual system at the library, relieved the difficulties and

problems faced by them in issuing and receiving books. This investigation has lead to the

system analysis, design and development, testing and implementation of the proposed

system “Library Management System”, with user-friendly front end, using Java

Swings as front end and MS-Access as back end followed with rename refactoring

method.

The concept behind refactoring is improving the design of existing software code.

Refactoring doesn’t change the observable behavior of the software; it improves its

internal structure which provides menu driven user friendly software which will help the

complex activities to reduce to simple ones.

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INTRODUCTION OF PROJECT

“Library Management System” is an attempt to build software to handle the

transactions taking place in the library. There are many software’s available in the market

for library management, but our’s is quite easy and simple. The software provided helps

both the administrator as well as the members of the library to perform the transactions

easily and efficiently.

In library basically there are two types of transactions taking place: One is

searching for a book, and if it is present then issuing the book. Another is returning the

books after the member has finished using the book. Our project aims at basically

implementing these two modules so that it becomes easy both to the administrator as well

as the members of the library.

The project is implemented in ASP.NET, which is a widely used language today.

The whole data is password protected due to which it has gained highest security. We

have used MS-Access for storing the data in tables.

Each time a new member is added to the library, he is given a user-id and

password through which he can access the software, but he doesn’t have any permission

to access all the information in the software. He can only search for

the related information. Even the clerks will be provided with the id and respective

password, with which they can access the information.

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They too have permission only to access the data related to them. Only the

administrator has the full permission to access the entire software.

This helps to gain better security relating to the data.

It is fully user-friendly and menu driven software which covers most of the aspects

of library. Just with the click of the mouse the required application is activated. It is

flexible and easy to operate.

The third person who does not have more knowledge about the system can also

operates on the system by referring images which shows the user friendly pictures and

help for transaction.

The main user of the system will be somewhat literate with computers. But the new

user may not know about the computers so this software is designed even for the persons

who do not know about the computers. Just with the double click of the mouse he comes

to know about the software.

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Introduction to .Net

The foundation of the .NET Framework is the common language runtime. Its principal purpose

is to load, execute, and manage code that has been compiled to Microsoft’s new intermediate byte-

code format called Intermediate Language (IL). Several languages, notably Microsoft’s Visual

Basic .NET and C# .NET (pronounced “C sharp”), have compilers supporting this format, and many

more are currently in development. It is important to note that the IL code is not interpreted. The

common language runtime uses just-in-time compilers to compile the IL code to native binary code

before execution.

.NET Framework Class Library

The .NET Framework class library is a collection of reusable classes, or types,

that tightly integrate with the common language runtime. .NET applications benefit from

using and extending or inheriting the functionality from the classes and types available in

the class library. The class library is very hierarchical and well organized,. It starts with

the most generic classes and continues to build down to classes with very specific and

precise functionality. Although this library is extensive, its organization makes it easy to

learn and use. In an age of ever-growing technology it is refreshing to see a new

technology and a new architecture that promise a reduced learning curve. This model also

makes it easy for third-party components to be integrated easily with the existing class

library.

As expected in an object-oriented class library, the .NET Framework classes

enable developers to accomplish rapidly a wide range of common programming tasks,

including things such as string management, file access, and database connectivity. Also,

Several classes facilitate highly specialized and custom development

environments. These classes make the application development environment very

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flexible. The following types of applications are readily supported through the .NET

Framework:

ASP.NET applications

Windows applications (Windows Forms)

Web services

For example, the Windows Forms classes are used to create Windows graphical

user interface (GUI) applications, which often are referred to as standalone applications.

This is facilitated through a series of reusable graphical interface classes. Alternatively, in

developing a Web-based application, the HTML and Web Forms classes facilitate its

rapid development. Either way the underlying framework provides the flexibility for

feature-rich applications regardless of the choice of application environment.

ASP.NET

ASP.NET is Microsoft’s upgrade to Active Server Pages (ASP).ASP.NET

architecture is very well woven into the .NET Framework to provide a powerful Event-

driven programming model. The new feature of code-behind allows true separation of

code and design. Also, you can write ASP.NET pages in any of the managed languages,

and the code is compiled to give high performance.ASP.NET is a more robust way to

bring applications to the Web. Gone are the endless lines of “spaghetti code” and with it

the ambiguous debugging.WithASP.NET, you will be able to create cross-browser, cross-

platform applications that you can port across the Web.

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Introducing the ASP.NET Architecture

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In the ASP.NET architecture, the .NET Framework works with the OS.A Web

client requests a Web Form (ASPX) resource, which is delivered through the Internet

Information Server (IIS) combining all additional resources, which may include a

database, Web Service, COM component, or a component class. All of these are

delivered through a compiled assembly (DLL) from the Web application, which sits in

the bin directory within IIS’s Web root. See Figure 10.1 for a conceptual overview of the

ASP.NET architecture.ASP.NET includes some new file extensions for the different

types of pages you can create in your solutions. The new extensions allow ASP.NET to

sit alongside ASP 3.0 on the same server with no filename conflicts. Here is a list of the

four most commonly used extensions:

.aspx : Used for Web Forms and is the replacement for the standard .asp

Extension used in ASP 3.0.

.ascx : Used to denote a reusable page components or control

.asmx Used to denote a Web Service.

.asax Used for the Global file and is the replacement for the .asa extension.

Each of these page types can have a code-behind page where you can store

program logic. Note that using code-behind pages makes your code more modular and

helps to hide the program logic from prying eyes, because the code behind pages are not

stored individually on the server but are part of the compiled assembly (DLL).The

corresponding code-behind pages would be .aspx.vb, .ascx.vb, .asmx.vb, and .asax.vb

respectively if the project was a VB.NET project, or .aspx.cs, .ascx.cs, .asmx.cs,

and .asax.cs respectively if the project was a C# project.

Figure: Overview of ASP.NET Architecture

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ASP.NET Server Controls

You can add two main sets of controls to your Web Form (ASPX page): HTML

server controls & Web server controls._______________________________________________________________________



HTML server controls: Allow you to work with all the properties of the standard

HTML elements within your server-side code (in your code-behind page or in

inline server scripting on the ASPX page itself). This will expose them for all

server-side processing and for content

Delivery, which you can provide a specific style sheet to comply with NS 4 or

Opera. To provide HTML form elements with the programming power of server-

side processing, you must add at least two attributes to the tag in question.

Web server controls

A completely new set of controls designed to interact with the .NET environment

by the additional properties and events included, most notably the ability to do a

postback.The tags are XML-based, so they all appear in the same manor as XML

elements for ease of use. Web server controls are defaulted to render HTML 3.2

for cross browser compliance. Web server controls inherit the System.

Web.UI.Control namespace, which predefines their attributes.

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ANALYSIS

MANUAL SYSTEM:

System is an orderly grouping of independent components that are linked

accordingly to a plan which interact with other system to produce the output of the

system. Design is essentially the bridge between requirement specification and final

solution for satisfying the requirements.

STUDY OF THE SYSTEM:

There are many transactions in the library like a book is been searched and if it is

present then it must be issued to the member. Another activity is returning of books from

the members which have to be entered into the register which is done manually. No up-

to-date information is kept.

NEED FOR THE NEW SYSTEM:

Each time maintaining of register is a tedious job and moreover all it has to be

updated each and every time manually. Hence there is need for changing the present

system and converting it into computerized system to meet the present requirements and

to eliminate the drawbacks of the existing system.

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PROPOSED SYSTEM:

The proposed system “Library Management System” is a computerized system

with better features than the existing system. It includes the concepts of the existing

system.

The features of the proposed system are:

The proposed system is password protected which provides security to the data.

Only the authorized user can access the entire data.

It is user friendly with well defined screens and required inputs.

It is interactive and fast in execution.

Data entry is optimized using combo boxes and other graphical controlled tools.

Navigation through the forms is easy.

Display of message box depicting the various messages relating to the inputs.

Maintains detail information of books, magazines and members.

Performance tuning is easy.

Information linking and embedding between the forms and tables is present in the

system.

Duplicate information cannot be entered, if done so related messages will be

displayed.

Large number of bulky registers can be avoided.

Reduction in clerical works and better accountability.

In general, it reduces time for all the transactions taking place in the library.

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SYSTEM REQUIREMENT SPECIFICATION

In library, basically there are two types of transactions taking place. One is

issuing a book/magazine and the other is returning a book/magazine. The system to be

developed should first satisfy these two functional requirements. Our proposed system

will satisfy these two requirements completely. The members of the library may also be

involved in other transactions such as searching process, reading news papers etc. The

proposed system should satisfy these needs also. The present system, which is fully

manual, must be changed to a computerized system. All the transactions taking place in

the library system must be interlinked with each other. Whenever a new member is

created in the

library they are given their respective member numbers through which they can proceed

with the library transactions. So the proposed system should be developed, so as to

provide the members with their respective ids. The system to be developed should fully

satisfy all the requirements related to manual library.

The proposed system should be built such that, all the users who use the system

must access it easily. Only the main person or the administrator must have full access to

the system. The members and the clerks of the library must access the system only to

some extent. The software should satisfy the above constraints of the system.

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HARDWARE AND SOFTWARE SPECIFICATIONS

Hardware Specification :

o Processor : Any Pentium I, II, III 450 MHz or Higher.

o RAM : 256 MB.

o Resolution : Minimum 800 * 600 Pixels.

Software Specification :

o Operating System : Any 32 bit Windows XP Operating system.

o Front end : Visual Studio.Net

o Back end : MS-Access.

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SYSTEM DESIGN

What is UML?

The Unified Modeling Language (UML) is a standard language for specifying,

visualizing, constructing, and documenting the artifacts of software systems, as well as

for business modeling and other non-software systems. The UML represents a collection

of best engineering practices that have proven successful in the modeling of large and

complex systems. The UML is a very important part of developing objects oriented

software and the software development process. The UML uses mostly graphical

notations to express the design of software projects. Using the UML helps project teams

communicate, explore potential designs, and validate the architectural design of the

software.

Goals of UML

The primary goals in the design of the UML were:

o Provide users with a ready-to-use, expressive visual modeling language so they

can develop and exchange meaningful models.

o Provide extensibility and specialization mechanisms to extend the core concepts.

o Be independent of particular programming languages and development processes.

o Provide a formal basis for understanding the modeling language.

o Encourage the growth of the OO tools market.

o Support higher-level development concepts such as collaborations, frameworks,

patterns and components.

o Integrate best practices.

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Types of UML Diagrams:

o Use Case Diagram

o Class Diagram

o Interaction Diagrams

Sequence Diagram

Collaboration Diagram

o Statechart Diagram

o Activity Diagram

o Implementation Diagrams

Component Diagram

Deployment Diagram

.

From this simple diagram the requirements of the library system can easily be

derived. The system will need to be able to perform actions for all of the use cases

listed. As the project progresses other use cases might appear. The member might have a

need to issue a magazine when he has already been issued a book. This diagram can

easily be expanded until a complete description of the library system is derived capturing

all of the requirements that the system will need to perform. The above steps generate the

following use-case diagram.

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http://atlas.kennesaw.edu/~dbraun/csis4650/A&D/UML_tutorial/physical.htm

http://atlas.kennesaw.edu/~dbraun/csis4650/A&D/UML_tutorial/activity.htm

http://atlas.kennesaw.edu/~dbraun/csis4650/A&D/UML_tutorial/state.htm

http://atlas.kennesaw.edu/~dbraun/csis4650/A&D/UML_tutorial/interaction.htm

http://atlas.kennesaw.edu/~dbraun/csis4650/A&D/UML_tutorial/interaction.htm

http://atlas.kennesaw.edu/~dbraun/csis4650/A&D/UML_tutorial/class.htm

http://atlas.kennesaw.edu/~dbraun/csis4650/A&D/UML_tutorial/use_case.htm


Use – Case diagram for library system

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Return Books

Borrow Books

Do Search

Read Books

Circulation clerk

Member


Use-Case diagram for Book-Borrower

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Reserve Book

Borrow copy of Book

Return copy of Book

Extend Date

Book Borrower


Class Diagrams

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IsssueBook

Book: Panel;lbBkId, lbBkName, lbBkAuthor, lbMemId, lbBkCat, lbMemName, lbDate1,lbDate2;Label ,txtBkName,txtBookId, , txtDate1txtBkAuthor, txtBkCat, txtMemId, txtMemNameJTextFieldbtnOk, btnCan;Button St; Statementid = 0; long

MemberId = 0; intid1,imth,iyr,vdat,vmth,vyr: int idate,vdate: String

Issue Book ( )actionPerformed ( )FocusLost ( )

Issue Mag

Panel ; Book lbMagId, lbMagName,lbMagCat, lbDate1, lbMemId, lbDate2,lbMemName,: JLabeltxtMagId, txtMagName,txtMagCat,txtMemId, txtMemName,txtDate1,txtDate2: JTextFieldbtnOk, btnCan: JButtonSt: Statement memberId = 0; intidate,vdate; String id = 0; longid1,imth,iyr,vdat,vmth,vyr; int

IssueMag()actionPerformed()focusLost()

1 2 1

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3 4

K.L.E’s B.C.A LIBRARY MANAGEMENT SYSTEM

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Return Book

Book :Panel lbBkId, lbBkName,lbIssued:Label txtBkId, txtBkName, txtIssued:TextField urdate:String btnReturn, btnCan:JButton id1,imth,iyr,vdat,vmth,vyr,due:int st: Statementrs: ResultSet .id = 0; longmid,bc: int

ReturnBook()actionPerformed()focusLost()

Return Mag

Book :PanellbMagId,lbMagName, lbIssued: Label txtMagId, xtMagName, txtIssued: TextField urdate:String btnReturn, btnCan:

Button id1,imth,iyr,vdat,vmth,vyr,due; int Statement st;rs: ResultSetid = 0: longmid,bc: int

ReturnMag( )actionPerformed( )focusLost( )

26

6 5 7


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Search Mag

Book :Panel lbSearch:Label radiobutton1,radiobutton2,radiobutton3:RadioButton txtSearch:TextField btnFind, btnCan:

Buttonflag=0: intst:Statement mname,mcat,search:String mref,bmid,bid,rows=0:int table:JTable jsp:JScrollPane data1[][]:Objectc:Container

SearchMag()actionPerformed( )

Search Member

Book:Panel lbSearch :Label radiobutton1,radiobutton2:RadioButton txtSearch:TextField btnFind, btnCan:Button flag=0,rows=0: int st: Statement mname,mcat,search:String table: Table data1[][]: Object c:Container mid,bcnt: int

SearchMember( )actionPerformed( )

Search Book

Book: PanellbSearch: Label radiobutton1,radiobutton2,radiobutton3,radiobutton4: RadioButton txtSearch:TextField btnFind,btnCan: Button flag=0: intst: Statement bname,bauthor,bcat,search: String bref,bmid,bid,rows:inttable:Table sp:ScrollPane data1[][]:Object c:Container

SearchBook()actionPerformed()

27

10

11


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ColFine

Member Panel lbMemId, lbMemName,lbMemCat;Label txtMemId, txtMemName,txtCat;JTextField btnDel, btnCan;Button st;Statementrs;ResultSet id = 0,heldBooks;long due; int

ColFine( )actionPerformed( )focusLost( )

Table Disp

book:Panelscroller: ScrollPanetable : Table

TableDisp( )

LibraryHelp

String sViewport vpCursor cURL url

LibraryHelp()run ()hyperlinkUpdate()HtmlPane( )linkActivated( )

AboutusFrame


AboutusFrame()run ()hyperlinkUpdate()HtmlPane1( )linkActivated( )

RulesFrame


RulesFrame()run ()hyperlinkUpdate()HtmlPane1( )linkActivated( )

8 9

12


Class diagram for Library Management System

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Library System

bar;MenuBar mnuFile, mnuEdit, mnuOpt, mnuWin, mnuHelp;Menu newBk, newMem,newMag,end; issueBk, returnBk, ,returnMag,delBk, delMem,delMag, delClerk, issueMagfindBk, findMem,findMag,memleave; change, close, closeAll: keyHelp,makeUser,addBCat,addMCat,addMagCat; about; MenuItempopMenu :PopupMenu popadd,popdel,popir,popsea;Menu book,member,mag,pdelbk,pdelme,pdelmag,issue,bkReturn,issuemag,magReturn,pdelck, find,findm,findmag;btnNewBk, btnNewMem, btnNewMag, btnIssue, btnReturn,btnIssuemag,btnReturnmag , btnDelBk, ,btnDelMag,btnFindBk, btnFindMem, btnFindMag, btnKey; btnDelMem ,statusBar :JPanel;lbStatus,lbWelcome;Labelst;StatementuserName;String

LibrarySystem( )addMouseListener( )quitApp ( )actionPerformed( )

Logon

fl=1: intLog :PanellbUser, lbPass:LabeltxtUser:TextField txtPass:PasswordField btnOk, btnCan; Buttonradmin,rclerk,rmem;

RadioButton con; Connectionuser;String

Logon ( )actionPerformed( )

9

2

5

7

1

10

4

86

3

11

12


Sequence Diagram for Issue Book

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Member Admin/Clerk Database

Request Book

Request Book name

check Book avail

Book avail

Request Member Id

Verify Member Id

Member Id exits

Issue Book

Update Database

Enter MemberId

Enter Book Name


Sequence Diagram for Return Book

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Collaboration diagram

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Member Admin/Clerk Database

Request to return Book

Request Bookname

updates book database

Request Member Id

Updates Member Database

Returns Book

UpdateDatabase

Enter MemberId

Enter Book Name


Activity Diagram to issue book

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Member

Library System

Admin/clerk

Database

1: login

2:verify login4: Request Kind

3: Admin login

5: Update Database

6: exit database


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Admin/Clerk

Enter Username

Enter Password

Database

Validate Password

Request Book

Valid

Unveil

check book Avail

Avail

Display msg

Issue BookTake Book

Update Database

Quit Library SystemRequest to Quit

Invalid

Member


TABLE DESIGN

Users Table:-

Field Name Data Type

Username Text

Password Text

Add Author Table:-


IDno Number

AuthorName Text

Add Category Table:-


Category Name Text

Add Publisher Table:-

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PublisherName Text


Add Remove Books Table:-

RegisterNo Number

BookTitle Text

Author Text

AvailableQty Number

Category Text

Publisher Text

Student Master Table:-

RollNo Number

FullName Text

Dateofjoin Date/Time

Class Text

Branch Text

College Text

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Transaction Table:-

RollNo Number

RegisterNo Number

Name Text

Bookname Text

Qty Number

IssueofQty Number

Status Yes/No

DateofIssue Date/Time

College Text

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IMPLEMENTATION

The implementation phase is the process of converting a new system design into

the operational one. The main steps include installing the software on the system,

installing Visual Studio.Net, installing Microsoft Access, installing DHTML, ODBC

driver for Access Database and using rename method for refactoring the existing source

code.

Refactoring is a disciplined technique for restructuring an existing body of code,

altering its internal structure without changing its external behavior. Its heart is a series of

small behavior preserving transformations. Each transformation (called a 'refactoring')

does little, but a sequence of transformations can produce a significant restructuring.

Since each refactoring is small, it's less likely to go wrong. The system is also kept fully

working after each small refactoring; reducing the chances that a system can get seriously

broken during the restructuring, by this the user will also find the code very easy.

In our system development we used parallel implementation method. In this method

for a certain period the old manual system is operated along with the new computerized

system. After the users satisfaction about the performance of the new system they will

discontinue the old manual system.

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MICROSOFT ACCESS

It is powerful semi RDBMS software developed by Microsoft Corporation.

Database design development is very easy in MS-Access as it provides GUI based

environment. Backup and restoring is easy in MS-Access, since the whole database is

stored in single database.

A database is a collection of information that’s related to a particular subject or

purpose, such as tracking customer orders or maintaining a music collection. If your

database isn’t stored on a computer, or only parts of it are stored, you may be tracking

information from a variety of sources that you have to co-ordinate and organize yourself.

This information is stored in a very structured manner. By exploiting this known

structure, we can access and modify the information quickly and correctly.

It allows you to make data available on the internet or an intranet for interactive

reporting, data entry, analysis or to use a data access page. Microsoft Access retrieves the

data from one or more tables and displays it on the screen with the layout you choose for

the page, or the layout you create from scratch Users can interact with data by using the

features on the data access page. You can create web pages that you can use to add, edit,

view or manipulate current data in a Microsoft Access Database. It provides tight security

for the database to protect data from unauthorized user access. It provides different

techniques at different levels. The simplest method of protection is to set a password for

opening a Microsoft Access database. To further protect the data you can encrypt it.

Encrypting a database compacts the database file and makes it indecipherable by a utility

program or a word processor.

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You can keep authorization checks. Especially when working in multi user

environment. It is used to provide different data access to different user’s working at

different levels. The most flexible and extensive method of securing a database is

user level security. This form of security is similar to methods used when you go online

and purchase some products; you are accessing the web merchant’s product database.

You can surely think of many more places where databases enter your life. The

idea is that they are everywhere. And each database requires some way for the user to

interact with the information within. Using Microsoft Access you can manage all your

information from a single database file. Within your file divide your data by using online

forms, find and retrieve just the data you want by queries, and analyze the database’s data

from the internet or an intranet by creating data access pages.

Access comes with wizards and variety of predefined data elements that lets you

keep track of some common information with only a few clicks of your mouse. Access is

Relational Database, which means that it allows data that has been stored in different

places to be linked.

Access helps to manage information in three important ways:

o Reduces redundancy.

o Facilitates the sharing of information.

o Keeps the data accurate.

Access wizard can help to create:

o Queries

o Tables

o Forms

o Reports

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o Macros

o Mailing Labels

o Modules

o Controls and buttons

Database: A database is simply a collection of useful data.

Tables: In access tables are similar collection of data. There may be many tables in the

database, all these tables would be organized differently and contain mostly different

information but they all be in the same database file and may relate to one another. These

tables are stored in the same database file because they are often used together to create

reports.

Records: A record is all the information contained in one row of an access datasheet

table.

Fields: fields are places in the table where you store individual chunks of information.

Access users key fields and indexing to help many database operations. You can tell

access which fields should be key fields or Access can assign them automatically.

Queries: Queries are requested to access for information and response to it is called as

dynaset.

Forms: Forms are on screen arrangement that makes it easy to enter and read data.

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Macros: A particular operation, such as Macros are tools that help automate complex or

time consuming repetitive manual tasks. A macro is a set of one or more actions that each

performs opening a form or printing a report. Macros can help you to automate common

tasks. For example, you can run a macro that prints a report when a user clicks a

command button. You can also use a conditional expression to determine whether an

action will be carried out when a macro runs in some cases.

Features of MS-Access:-

o GUI based environment.

o Supports almost all types of SQL statements.

o Data security by providing encryption/password.

o Very easy to understand and work with.

o Provides various properties for tables to improve performances.

o Provides various objects such as tables, queries, forms, reports, macros and

modules.

-: DATABASE CONNECTIVITY:-

In database connectivity we are going to use MS Access.

In VB.net tool Connection there is OleDb Connection Provider.

In this OleDb Connection Provider you select a MS Jet4.0 OleDb Connection

Provider and say next.

The Connection it asks the path of the data base which is you done in MS

Access.

There is a Test connection you ckick on that it will test click ok.

Then your DataBase is connected to your backend database.

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REFACTORING

"Refactoring is the process of changing a software system in such a way that it

does not alter the external behavior of the code yet improves its internal structure."

Refactoring is a disciplined technique of restructuring your existing body of code by

altering its internal structure without changing its external behavior.

The methods of refactoring the source code follows:

Renaming fields, methods, classes, or packages

Moving classes

Extract interface/super class

Pull up, push down method

Inline method

Extract method

Move method

Convert nested to top-level class

So to refactor the Library System I went with the Rename method. Renaming

fields is easy. For example, let's change the name of the awkward firstPlusSecond field to

result. This is how rename method is done for the existing source code. Further you will

get to see how it works.

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Rename refactoring:-

Rename refactoring apply a new name to a package, class, inner class, interface,

method, field, local variable, or property, ensuring that all references to that name are

correctly handled. Rename refactoring a constructor renames the class.

Rename refactoring is far more than a search and replace task; references must be

accounted for and properly handled while patterns must be recognized. For example,

when a rename refactoring is performed on a class name, the new name of the class must

be reflected in the class declaration, in the declaration of the constructor, and in every

instance of that class and every other reference to that class.

Source code can be renamed in following places:-

"Renaming a class, inner class or interface"

"Renaming a method"

"Renaming a local variable"

"Renaming a field"

Renaming a class, inner class, or interface:-

Rename refactor for an outer public class renames all declarations of and all

usages of the class and the source file. If you select a constructor, the rename refactoring

renames the class.

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Renaming a method:-

Rename refactoring a method renames the method, all declarations of that

method, and all usages of that method. The method can be renamed from the selected

class down in the hierarchy or in the entire hierarchy. A forwarding method that passes

on the method call to the new method can be created. This allows your public API

to remain intact.

The name of a method does not reveal its purpose.

Change the name of the method.

Renaming a local variable:-

A local variable rename refactoring renames the declaration and usages of that

variable to the new name. Note that a method parameter is treated as a local variable.

Renaming a field:-

A field renames refactoring renames the declarations and usages of that field to

the new name.

Advantage of using Refactoring is:-

Improving the code's elgibility and maintainability.

Making your source code more portable and reusable.

Implementing a design change due to a new software feature.

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SNAPSHOTS

LOGIN FORM:-

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ACTION FORM:-

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ADD REMOVE BOOKS FORM:-

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BOOKS ISSUE FORM:-

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RETURN BOOK FORM:-

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SEARCH BOOKS FORM:-

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STUDENT REGISTERATION FORM:-

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TESTING

Unit Testing:

Unit testing is the first phase of testing that was done after the completion of each

and every module. This was performed on the software by checking syntax of the

program. The module interface was tested to ensure that information properly flows in

and out of particular module. The local data structure was examined to ensure that the

data stored temporarily maintains its integrity during all steps of program execution.

Boundary conditions were checked.

Integration Testing:

Integration testing is s systematic technique for constructing this program

structure while at the same time conducting tests to uncover errors associated with

interfacing. Objective of integration testing is to take unit-tested modules and build a

program structure that has been dictated by design, generally involves a comprehensive

exploration of the way in which the software executes the various functions for which it

was designed.

Validation Testing:

Validation testing is the next to last phase and is a final series of software testing

begins at the culmination of integration testing. Software developed is completely

assembled as a package, and interfacing errors have been uncovered and corrected.

Configuration review is done to ensure that all the elements of the software have been

properly developed and cataloged and have necessary details to support the maintenance

phase of the software.

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System Testing:

This is the last phase of testing followed were in the developed software was

incorporated with other system elements such as new hardware, information and a series

of system integration and validation test were conducted, Primary purpose of system

testing is to fully exercise the computer based systems.

Debugging:

Debugging occurs as consequences of successful testing i.e., when a test case

uncovers an error, debugging is the process that results in the removal of that error. The

results of testing are assessed and lack of correspondence between the expected and

actual outcome is encountered. The debugging process attempts to match symptom with

cause, thereby leading to error correction. Debugging methods followed were forward

tracking, backward tracking and by using the response. Write statements to output the

values of key variables.

The following test cases are satisfied in this project:

Provide null values, numeric and non-numeric values to verify data inputs and

validations. Checking for conversion errors such as numeric to non-numeric and

vice versa.

The user should provide all information for any transaction. If it is not provided

the appropriate message is to be displayed.

The primary key and unique constraint violation verification.

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CONCLUSION

The intended goal of the project was to develop Library System for a library using

Visual Studio.Net as front end and MS-Access as the back end and also by applying

Rename method for Refactoring. This goal is achieved as it is found that doing daily

library transactions using this software reduces complicated paperwork, and later it is

possible to upgrade it for any other library according to their requirements by changing

the size of the data base and some functions.

The library system incorporates standard user interface with menu driven interface

and several message boxes. The automation has led to the auto generation of the Member

id and Book id .This module gives search options wherein the user can perform the

search operation using different fields. This module is more secured because the system

allows only authorizing person to operate fully. Library system also gives the book

details and magazine details in one of their modules which lead for the proper flow of

database.

This project has also helped me sharpen my technical programming skills along

with better understanding of the flow of program and interface designing. On the whole

the project has been a great learning experience.

New system includes the present requirements of the library system. If needed in

future necessary updations can be made to the software without much difficulty. The tool

developed may be generalized for any other library. The system can be developed for

online transactions of library wherein all books can be available online to the user.

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FUTURE SCOPE

When software developers add new features to a program, the code degrades

because the original program was not designed with the extra features in mind. This

problem can be solved by rewriting the existing code and working around the problems

which arise when adding the new features.

New system includes the present requirements of the library system. If needed in

the future necessary updations can be made to the software without much difficulty. The

tool developed may be generalized for any other library. The system can be developed for

online transactions of library wherein all books can be available online to the users.

The software developed can also be build using this Aspect-Oriented technology.

We can use aspectJ language, which is an aspect-oriented extension to the Java language.

There may be some difficulties in cross-cutting modules using the Object-Oriented

Programming. But if we use the Aspect-Oriented Programming features those difficulties

can be overcomed.

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BIBLIOGRAPHY

Books:

Microsoft Visual Studio.Net

Mastering MS-Access

- Evengelos

UML User Guide

- Grady Booch, Jacobson & Rumbaugh.

Websites:

http://www.Microsoft visualstudio.net.com

http://www.Microsoft Access.com

http://www.DHTML.com

http://www.refactoring.com

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http://www.refactoring.com/

http://www.DHTML.com/

http://www.google.com/

http://www.Microsoft/

http://www.google.com/

http://www.Microsoft/


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