Access 97 2000 Database Development Outside VBA by Devendra Saksena

By Devendra Saksena

Emphasizes tips to boost easy but strong databases with no requiring the writing of visible easy for functions code.

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Only if the Page 27 information in the second table is not often required or the number of fields is quite large (a maximum of 255 is allowed) do we create a second table that has a one-to-one correspondence with an existing table. One-to-many relationships between tables are more common. An instance of a one-to-many relationship can be the relation between a table of fathers of the schoolchildren and a table of schoolchildren. Since a father can have more than one child, a record in Fathers can have more than one corresponding record in Children.

You can have spaces in the names of databases and database objects, but since spaces are also used as delimiters, to avoid confusion it is a good idea to avoid spaces in object names. As you progress, you will notice that to avoid this problem, Access places brackets or quotes around object names. Access allows you to save objects as they are created, but it is a good idea to save your database at the end of each session. Page 9 Creating a Table Suppose we have a class of schoolchildren for which we have the following information: RollNo FirstName LastName DateOfBirth Sex Address Street Height 1.

But by using Access we can retrieve such data in seconds, if not milliseconds. Even far more complex questions, like which salesperson's recorded sales of a particular item in a particular region in a particular period that exceed a particular sum, can be easily answered. Similarly, we can use Access for reviewing and projecting data. The real beauty of Access lies in its simplicity. It allows you to work intuitively. Access objects have a number of useful properties that help you design databases without much programming.

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