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DATABASE DESIGN AND THE IMPORTANCE

OF DESIGNING A FUNCTIONAL PROCESS

CIS475
Instructor: IBRAHIM ELHAG, PhD
3/6/2012

DATABASE DESIGN

One of the most important if not the most important aspect of a database is the database design process. It is a must that the design is good and functional. A database consists of many different parts of an engineer’s design, which together makes up a complete database system. A database system is designed to manage large bodies of information. Database design is the construction of a database as a subsystem of an information system. Therefore, the database design process is an integral component of the information system design process. ( Chilson and Kudlac, 1983).
One of the greatest problems in the application design process is the lack of foresight. During the design process there must be a thorough evaluation of your database, what it should hold, how data relates to each other, and most importantly, whether it is scalable. When it comes to the maintenance of your database it should be easy to maintain, this means storing as limited amount of repetitive data as possible. Let’s say you have a lot of duplicate data, and one instant of that data undergoes a name change, that change has to be made for all occurrences of that data. You can overcome this duplication problem by creating a table of possible values and use a key to refer to the value. That way, if the value changes names, the change occurs only once, in the master table.

What are the steps involved in the database design. First, you must determine the purpose of your database, this helps you prepare for the remaining steps. You must find and organize all the information you want to record in your database such as product names and order numbers. The information must be divided into major entries or subjects, and then

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