Developing Business Application

System Analysis
System analysis is made on these approaches, Structured analysis and object oriented analysis. It requires requirement specification from customer and target specification form developer.

System Analysis Problem

• Conflicting views
• Unclear aim of the system
• high complexity of the tasks
• communication and language problems
• change of requirements
  

Requirements
There are two types of requirements

• functional requirements defines actions and expected result
• Non functional requirements defines technical, ergonomics and quality of service

Requirement specification documents includes;

• goals
• general descriptions
• definitions
• product environment
• functional and non functional requirements
• approval criteria

good requirement must be;

• not have incomplete processes descriptions
• not have implicit assumptions
• not have illegal universal quantifier
• not have incomplete conditions
• not have unclear processes
• not have semantically weak verbs

Then Developing activity requires

• Use cases
• Use case diagram
• Class diagram
• Activity diagram