CSCI 375ARCHITECTURAL DESIGN

Today’s planArchitectural Design!

Modern Web-based SystemAmazon.com

Internet

PaymentProcessor

Shipper Amazon

System’s Architecture is composed of•Computing devices•Networks•Software

•Protocols

Computing DevicesServersPersonal Computers

NetworksNetwork is a collection of:◦ Hardware◦ Software◦ Transmission media

Lets devices communicate with each otherKinds:◦ LAN◦ Internet Backbone◦ WAN◦ WWW

SoftwareTwo main types:◦ Applications◦ Systems Software

Internet

PaymentProcessor

Shipper Amazon

Software:• OS• Browsers• Plugins• Apps

Software:• OS• Web server• Applications• DBMS

ProtocolsNetwork Protocols◦ Dictate how messages are transmitted

Web Protocols◦ URL◦ HTML◦ XML◦ HTTP(S)

Architectural ConceptsWe discussed earlier:◦ Technological Architecture◦ Application architecture

Architectural ConceptsSaasWeb ServicesDistributed Architecture

Distributed Architecture

View Layer Domain Layer Data Layer

User Request

Formattedresponse

Informationrequest

Unformattedresponse

Data accessrequest

Data accessresponse

Modeling the ArchitectureArchitectural Diagrams◦ Location Diagrams◦ Network Diagrams◦ Deployment Diagrams

Location Diagrams

https://www.flickr.com/photos/nrcgov/36631031412

Network Diagrams

Internet

PaymentProcessor

Shipper Amazon

Activity: Spring Breaks ‘r’ Us

Deployment Diagrams<<device>> Application server

<<asp server>> Microsoft IIS 7.0

Reporting subsystem

Sales subsystem

Customer Account

subsystem

Order Fulfillment subsystemMarketing

subsystem

<<device>> DB server

<<dbms>> Microsoft SQL Server 2013

<<schema>>Customers

<<schema>>Products

<<schema>>Orders

<<protocol>>SQL

Describing the EnvironmentWe need to think about:◦ External systems◦ Technological Architecture

Key Questions1. What features of existing/proposed system that will support or

constrain the system?2. What external systems and databases will you have to interact

with?3. What devices will be used to automate inputs and outputs4. What UI will be used?

RMO Environment Description

Internet

Supply ChainManagement server

Retail StoreServer

Web storefrontserver

Phone & mail-orderserver

firewall

GigabitLAN

VPN gateway (manuf. & distr.)

VPN(retail stores)

Credit verification server

VPNgateway

VPNgateway

Distribution and Manufacturing

workstations

Retail storeworkstations

Customerdevices

Planned Updates to RMO systemSupport for mobile devicesUpdates to support Web TechnologyDirect interface with Social Media

Possible use of external service providers to host all or some of the CSMS

How will these updates impact system?Support for mobile devicesUpdates to support Web TechnologyDirect interface with Social Media

SecurityPossible use of external service providers to host all or some of the CSMS

How will these updates impact system?

Internet

Webservers

Databaseservers

Content management

servers

Applicationservers

firewall

GigabitLAN

VPN gateway (manuf. & distr.)

VPN(retail stores)

Paymentservers

VPNgateway

VPNgateway

Distribution and Manufacturing

Employee devices

Retail storeEmployee devices

Customerdevices

App storesCertificateservers

Socialnetworking

Designing Application ComponentsApplication Component Boundaries◦ Where does one component start and another end?◦ Top-down approach:

◦ Break whole into smaller related parts◦ Factoring

◦ Bottom-up approach:◦ Group functions together ◦ Grouping

Designing Application Components

View Layer Domain Layer Data Layer

User Request

Formattedresponse

Informationrequest

Unformattedresponse

Data accessrequest

Data accessresponse

Deployment Diagram<<device>> Application server

<<web page server>> Microsoft IIS 7.0

Customer view layer

(smart phone)

Phone salesRep view

layer

Manager View layer

Customer view layer

(laptop/deskto)

Store sale repView layer

(POS)

Shipping rep view layer

(tablet)

Customer view layer

(tablet)

Customer view layer

(tablet)

Shipping repView layer(desktop)

CSMS customerUse cases

(business layer)

<<asp server>> Microsoft IIS 7.0 <<device>> Database server

<<dbms>> SQL Server 2013

<<schema>>CSMS domain

classes

<<protocol>>SQL

<<protocol>>ASP.NET

Activity: On the Spot Courier ServicesAt end: add Deployment diagram