COMP 378 Lecture Notes - Lecture 11: Systems Development Life Cycle
1 Sep 2018
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Answer the following questions (250 words max/question): explain the concept of program-data independence, and explain how it is achieved in the database approach. Program data independence is the process where data description is separated from the application program where it is being used. In the database approach, the concept of program- data independence is achieved by storing the data description in a central location called repository. This feature of the database allows changes to be made to the data separate from the application program itself while following the limitations. Briefly contrast and compare the following development approaches: the systems development life cycle and the prototyping methodology. Sdlc is a process used to development a system through the interaction of database designers, programmers and other team members of the organization. It involves specifying, developing, maintaining and replacing the existing information system. Not necessarily correspondence between the sdlc phase and the database development steps.
