Indexes are primarily used to enhance database performance (though inappropriate use can result in slower performance).
An index field can be an expression computed from the values of one or more columns of the table row. This feature can be used to obtain fast access to data based on some transformation of the basic data.
Table indexes are managed on the Indexes tab of the Table Designer. Just simply click/double-click an index field for editing. A right-click displays the popup menu or using the toolbar below, allowing you to create new, edit and delete the selected index field.
Add Index
To add a table index
- Open the table in the Table Designer.
- Open the Indexes tab.
- Right-click and select the
Add Index from the popup menu or click the
Add Index from the toolbar.
- Edit index properties.
Edit Index
To edit a table index
- Open the table in the Table Designer.
- Open the Indexes tab.
- Just simply click/double-click on the index to edit.
Delete Index
To delete a table index
- Open the table in the Table Designer.
- Open the Indexes tab.
- Right-click on the index to delete and select the
Delete Index from the popup menu or click the
Delete Index from the toolbar.
- Confirm deleting in the dialog window.
See also:
Setting Index Name and Field Names
Setting Index Type and Flags
Setting Index Tablespace and Constraints