Date post: | 22-Jan-2018 |
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Lecture -1
Introduction to Very basics Guides through Different design stages Familiarize with a tool Emphasis on Design stages of Databases
Assignment + Quizes = 10% Mid Term = 25% Terminal = 40% Practical = 25%
Passing Criteria = 50% (In each Terminal & Practical Exams)
Database Definition
Comparison with the prior Data Processing approach
Pros & Cons of Databases
What is a Database
A database is a shared collection of logically related data that is stored to meet the requirements of different users of an organization
A database is a self-describing collection of integrated records
A database models a particular real world system in the computer in the form of data
Accounting
AccountsPayable
Accounts Receivable
Management
ControlPlanning
Manufacturing
ProductionScheduling
Marketing
Product Development
Sales
CorporateDatabase
Computer initially used for computational/ engineering purposes
Commercial applications introduced File Processing System
A collection of programs that perform services for the end-users such as production of reports
Program and Data Interdependence
RegistrationApplications
Registrat ionDataFiles
Registration
ExaminationApplications
ExaminationDataFiles
Examination
LibraryApplications
LibraryDataFiles
Library
Fine
Books Issued
Father Name
Name
Reg_Number
Library
Grade
Semester
Class
Address
Name
Reg_Number
Examination
Class
Address
Phone
Father Name
Name
Reg_Number
Registration
Duplication of Data
Vulnerable to Inconsistency
Advantages of Database ApproachAdvantages of Database ApproachRegistrationExamination
LibraryApplications
Library
ExaminationApplications
RegistrationApplications
Database Management
System
University StudentsDatabase
- Data Sharing - Data Independence
- Controlled Redundancy - Better Data Integrity