SW Software Design SW

Repository Design Registrar Staff Professor Client Admin Client Student Database Professor Database Schedule Class Database Adv : - share large database - integrate tools w/ same data model Drbk : - performance - evolution difficult - forces the same policy on subsystems - difficult to distribute Student Client

Client/Server Design Registrar Staff Student Database Professor Database Schedule Class Database Payroll HR Adv : - distributed - scalable Drbks : -naming/registry -diff to anticipate prbls w/ add a srvr -independent data mgmt/recovery Student Client Professor Client

Layered Design Kernel Memory Mgmt I/O - Dev.Drv File Server - GUI Adv : - incremental dev. - portability

Hierarchic Control Design Adv : - call/return - only for sequential tasks

Centralized Design Adv : - parallel tasks - RTS System Controller Input Sensor Program Program/Data

Broadcast Design network Client A Client B Client C Client D

Interrupt Design IH 2 Proc IH 3 Proc IH 5 Proc IH 4 Proc IH 1 Proc Adv : - fast Drbks : -complex to implement/test/validate

Compiler: Functional view Lexical analysis Syntax analysis Semantic analysis Build symbol table Code generation input program program symbols symbolic program syntax tree symbol table analyzed program Object code

Compiler: Object oriented view Source program Syntax tree Symbol table Analyzed program Object code

Software Design Process Requirements Specification Architectural Design Functional Specification Architecture Chart UI Design Module/Algorithm Design UI Specification Database Design Module/Algorithm Specification Database Specification Design Activities API, algorithms database

C++/Java C++ Classes, variables, functions class myclass { int myclassvariable; public: int myclass (int); ~myclass(); void function(int i) } Java Classes, variables, methods public class myclass { int myclassvariable; myclass (int){}; void function(int i){}; }

Architecture Chart HTML GUI WML GUI SQL Database Server WAP Terminal Web Terminal JDBC HTML WML Template files ASCII

Use Case Diagram Check Grade Register Classes Database Query Authorize Student Input Grades Student Professor Registrar Staff Max Credits <<include>> <<include>> <<include>> <<include>> Include Generalization Use Case

Class Diagram Catalog Entry exam date : Date grade : String passed():Boolean Class subject : String professor : String gradedPNP():String 1 * * 1 If CatalogEntry.Student.isCurrent is “n” then Catalog.Entry.grade must be “N” Multiplicity: mandatory Association Generalization Class Constraint Job 0..1 Multiplicity: optional Attribute Operation Multiplicity: Many-valued Navigability Student name : String address : String ID : Long Integer isCurrent():String Graduate department: String isCurrent():String Undergraduate major: String isCurrent():String

Object/Class Diagrams Employee name Male Female Developer QA/Test Design Job <<dynamic>> Sex {complete} Discriminator Manager Software: MGMT name = “Name” MGMT * 1 Software PM: MGMT name = “Name” QA Manager: MGMT name = “Name” Software PM: MGMT name = “Name” Engineer: Developer name = “Name” Engineer: Design name = “Name” Engineer: QA/Test name = “Name” Engineer: Developer name = “Name” Object Diagram showing instances of the above class diagram Class Diagram with Multiple and Dynamic Classification Sex: M/F Sex: M/F Sex: M/F Sex: M/F Sex: M/F Sex: M/F Sex: M/F Sex: M/F

Statechart Diagram State C State B State A State D -describes the behavior of a model element such as an object or interaction Trigger condition A to B Trigger condition B to D Trigger condition C to A Trigger condition C to B Trigger condition B to C start self-transition transition state

Sequence Diagram Initiate request Init servlet new Gdocument(); Connect to the database servlet.setDomaine(); servletgetConnection(); HTTP request on the server TCP/IP port 80 Database call prepareStatement() executeQuerry() Response to the SQL request Database call return Read data getString(); Generate HTML output doc.p(); HTML return return(); Display WEB page Web Client Web Server Database

Activity Diagram Present lecture Prepare slides Turn on the projector Tune the projector [found projector] [no projector] Use blackboard Begin lecture Start Fork Join End

Component Diagram WML Interface Search Engine Database query

Deployment Diagram WAP Terminal WML Interface Server Search Engine Database query Component Communication Interface Application Connection Contained object(s) Node