A systems analysis and design methodology which follows the functional- (process) oriented approach ( Shoval, 1988 ). In the analysis phase of development it utilizes hierarchical DFDs. In the design phase the DFDs are used to design the various components of the system. These include: a) top-level descriptions of the transactions, which eventually become detailed descriptions of the applications programs; b) the user interfaces (menus); c) the input and output screens and reports; and d) the database schema, or normalized relations, and SQL commands for retrieving and updating the database.
Published in Chapter:
Functional and Object-Oriented Methodology for Analysis and Design
Peretz Shoval (Ben-Gurion University, Israel) and Judith Kabeli (Ben-Gurion University, Israel)
Copyright: © 2009
|Pages: 9
DOI: 10.4018/978-1-60566-026-4.ch252
Abstract
The chapter provides an overview of FOOM–Functional and Object-oriented Methodology–for analysis and design of information systems. FOOM integrates the functional and object-oriented approaches. In the analysis phase, two main models are created: a) a conceptual data model, in the form of an initial class diagram; and b) a functional model, in the form of OO-DFDs (object-oriented data-flow diagram). In the design phase, the above models are used to design the following products: a) a complete class diagram, including Data, Menus, Forms, Reports and Transactions classes, including their attributes, relationships and methods; b) the user interface–a menus tree; c) the input and output form and report; and d) detailed descriptions of the class methods, expressed in pseudo-code or message charts.