Software Design
Software Design
and Development
and Development
( A guide )
( A guide )Software Design & Development
Software Design & Development
Day 1 - Definitions and Overview
Day 2 - Software Design
Software Development

Day 1 - Definitions & Overview
Definitions

What is software ?

What is software design ?

What is software development ?

What is a CASE tool ?

Day 1 - Definitions & Overview
Definitions

Software development life-cycle

Services &
Objects, UI
logical DB
Components,
UI &
Physical DB

Day 1 - Definitions & Overview
Part 1 of Software Design
Conceptual
Scenarios
•
Identify business needs
•
Understand users’ requirements
•
Generate scenarios that reflect
complete & accurate requirements
by involving the customers, users
and other stakeholders

Day 1 - Definitions & Overview
Part 2 of Software Design
Logical
Services &
Objects, UI,
logical DB
•
Organize the solution
•

Day 1 - Definitions & Overview
What is software development ?
Software development comprises many
individual tasks and activities that are
performed in a fairly standard manner,
the only difference being the objects on
which they are being performed

Day 1 - Definitions & Overview
Requirements
System
•
Business needs
•
Functional - inputs,
processing, outputs,
human interface,
storage structure
dependencies
•
Performance
•
System & data
security
Information
•
Project Overview
•
Data models
•


Requirement
Mission analysis
stage
Concept.
Dev. Stage
Initiation Phase
Development Phase
System
analysis
stage
System
design
stage
Construct
& acq.
stage
User
accept.
stage
Operation and Maintenance Phase
Implementation stage Maintenance stage
Day 1 - Definitions & Overview
Software development life-cycle

Day 1 - Definitions & Overview
Software development life-cycle
Installation, Operation
& maintenance
Needs Definition

Procedural model
Planning & Mgmt SOW Architecture Plans
Software req. Architecture Func. Spec. Review,sign

Life cycle phases Input Output Controls
Pre. Design Func spec Detailed doc Review,sign
Detailed Pre. Design Detailed spec Review,sign
Code & test Detailed spec Final spec Walk-thru

Syst. Accept. Int., syst. Syst. Accept. Test plan
Accept test doc.

Day 1 - Definitions & Overview
Node A
Node B Node C
Node D
Node E
Node F
Node G
Node H Node I
Software Life Cycle

Day 1 - Definitions & Overview
Node A
Node B Node C
Node D
Node E
Node F
Node G
Node H Node I

Node H Node I
C.. For acquired
software
components,
all required
formal
agreements have
been obtained