Basics 5 min read
Basic Ideas on UML
Model A model captures aspect important for some application while omitting (or abstracting) the rest. A model in the context…
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Basics 6 min read
Structured Design
The aim of structured design is to transform the results of the structured analysis (i.e. a DFD representation) into a…
Basics 13 min read
DFD Model of a System
Context diagram The context diagram is the most abstract data flow representation of a system. It represents the entire system…
Basics 6 min read
Data Flow Diagrams (DFDs)
Structured Analysis Structured analysis is used to carry out the top-down decomposition of a set of high-level functions depicted in…
Basics 6 min read
Functional independence
A module having high cohesion and low coupling is said to be functionally independent of other modules. By the term…
Basics 4 min read
An Overview of Current Design Approaches
Cohesion Most researchers and engineers agree that a good software design implies clean decomposition of the problem into modules, and…
Basics 4 min read
Basic Concepts in Software Design
Software design and its activities Software design deals with transforming the customer requirements, as described in the SRS document, into…
Basics 7 min read
Algebraic Specification
Algebraic specification In the algebraic specification technique an object class or type is specified in terms of relationships existing between…
Basics 9 min read
Formal Requirements Specification
Formal technique A formal technique is a mathematical method to specify a hardware and/or software system, verify whether a specification…
Basics 6 min read
Documenting functional requirements
For documenting the functional requirements, we need to specify the set of functionalities supported by the system. A function can…