Module 4 (real)

A mechanism to transform user requirements into some suitable form, which helps the programmer in software coding and implementation.

S the first step in SDLC (Software Design Life Cycle), which moves the concentration from the problem domain to the solution domain.

As for requirement the design should be accurate.

It should have the complete components, like modules and data.

Resources ought to be utilized efficiently by the program.

It can be modified when needed

There shouldn't be any inconsistency within the design

The design should be so simple so that it can be easily maintainable by other designers.

divide the problems into small pieces and conquer the problems one by one.

A tool that enables a designer to consider a component at an abstract level without bothering about the internal details of the implementation.

A module is specified by the method it performs. The details of the algorithm to accomplish the functions that are hidden to the user of the function.

Details of the data elements are hidden to the users of data. It forms the basis for Object Oriented design approaches.

Are the divisions of software that are into separate modules, which has named and addressed and are embedded later on in a completely functional software.

Reduces the design complexity and results in easier and faster implementation by allowing parallel development of various parts of a system.

Achieved by developing functions that perform only one kind of task and do not excessively interact with other modules

measures the relative function strength of a module.

Measures the relative interdependence among modules.

suggests that modules can be characterized by the design decisions that protect from the others, I.e., In other words, modules should be specified that data include within a module is inaccessible to other modules that do not need for such information

organize the program modules in such a method that are easy to develop and latter too, change.

starts with the identification of the main components and then decomposing them into their more detailed subcomponents

Starts with the lower details and moves up the hierarchy and is suitable to an existing system.