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- 0, In this demonstration, you will see how to use
- 5, Data View to modify the structure of a database. From
- 9, Data View, you can modify the design of existing
- 13, database items and create new items. To change the
- 17, design of a table, right-click the table and click
- 20, Design. Table information is displayed in a
- 24, grid. You can change the definition of existing
- 27, columns. For example, I'll change the data type of StudentID
- 32, to smallint. To add a new column, type the
- 36, information at the end of the grid. To change general
- 42, properties of your table, click the Properties icon on
- 46, the table toolbar. From the Table tab, you can set
- 51, constraints for the table. For example, the
- 54, Enrollment table has a constraint that the grade must be
- 58, between 0 and 4. I can edit this constraint or
- 63, click New to add a new constraint. From the
- 67, Relationship tab, you can specify how columns in this table
- 72, are related to other tables. From the Index/Keys
- 77, tab, you can create new indexes or modify attributes
- 82, of existing indexes. All of the changes you make to
- 90, a table are saved until you close the table
- 93, design window. To save changes to an SQL script, click
- 98, the Save Change Script icon. Visual InterDev
- 103, generates the SQL script and saves this information into
- 107, a text file. At a later date, you can use a tool,
- 112, such as ISQL, to apply this script to a database to
- 116, apply your changes. When you close the data design
- 122, window, you are prompted whether to apply your
- 124, changes. I'll click No, to not save my changes. If you
- 129, have made changes that would affect other tables
- 132, as well, you are prompted to save those
- 135, changes. I'll click No. In addition to modifying the table
- 140, design, you can modify a stored procedure. To modify a
- 144, stored procedure, right-click the procedure and
- 147, click Open. You can also create new items for a SQL
- 153, Server database. From the Insert menu, click New
- 157, Database Item, and select the type of item you want to
- 160, create. So in this demonstration, you have seen how
- 166, to use the Data View tab to modify the structure
- 170, of a database.
- 174, END