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Q5 Second normal form
Q6 Third normal form
Q7
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82 Chapter 3
Q8
Order-taking code |
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Q9 |
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Let's Design a Database! 83
Designing a Database
In this chapter, you learned how to design a relational database. However, there are other database design methods. Usability and efficiency of a database depend on an analysis and design method. Therefore, it is important to create an appropriate database in the design stage.
In the database design stage, you need to perform various tasks in addition to table design. For example, you need to consider a datatype to use in the table. You may also need to specify columns indicating numerical values, currencies, and character strings. In addition, you need to devise a search method so you can carry out fast searches. Sometimes, you must create a design while keeping physical file organization in mind. And you have to control which users can access the database to ensure security. There are many factors you need to think about when designing a database. We’ll look at some of these factors in the following chapters.
84 Chapter 3
4
Let's Learn About SQL!