System development can mean to compile a new system to replace the old system as a whole or improve existing systems. There are several methods usually used for the Development of Information Systems, namely :
1. Functional decomposition methodologies, which emphasize the methodology of solving the system into smaller subsystems. Included in this methodology is HYPO (Hierarchy plus Input-Process-Output), SR (Stepwise Refinement), and Information Hiding.
2. Data-oriented methodologies, the methodology that emphasizes the characteristics of the data to be processed. This methodology is grouped into two classes, namely :
a. Data – flow oriented methodologies, the methodology that is based on the solution of the system into based on the type of data elements and the behavior of the logic module in the system. Included in this methodology is SADT (Structured Analysis and Design Techniques), Composite Design, SSAD (Structured System Analysis and Design).
b. Data Structure oriented methodologies, ie methodologies that emphasize the structure of the input and output system. Included in this methodology is the JSD (Jackson’s System Development) and W / O (Warnier / Orr).
3. Prescriptive methodologies, which are included in this methodology : ISDOS (Information System Design and Optyimation System), PRIDE, SDM/70.
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