Functional and Object Oriented Analysis and Design: An by Peretz Shoval

By Peretz Shoval

Practical and item orientated research and layout: An built-in method teaches scholars of knowledge platforms, software program engineering, laptop technology and comparable components how you can study and layout info platforms utilizing the FOOM technique. FOOM combines the object-oriented technique and the sensible (process-oriented) technique. It makes a transparent contrast among the research and layout improvement levels, and permits a gentle transition from the previous to the latter. The technique in useful and item orientated research and layout: An built-in method is especially based. therefore, it offers step by step directions on what to do and the way to do all of the research and layout actions. Many examples make the training and usage of the method effortless.

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For example, between Departments and Courses we may define the relationship types: courses offered by a department, service courses received by a department, the most popular course of a department, and so on. Reference Attributes A relationship between classes is not represented only by a connecting line, but also by defining reference attributes (also called relationship attributes) of the respective classes. ]. For example, in Figure 2 we have the belonging relationship between Courses and Departments; therefore we define in class Courses an attribute: belongs to department [Departments].

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For example, an address may be defined as Attribute address tuple {Street, Number, City, Zip}. For short, the word “tuple” may be left out, because the “{ }” parentheses indicate that the attributes within are a tuple. Key A key is an attribute whose value is unique among the class’ objects, and therefore enables to identify an object in the class. Obviously, a key may not be null. A key is often used for searching/locating or storing an object in the database. 1 for student ID. A key may sometimes consist of more than one attribute (because no single attribute alone can identify an object).

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