6. Using JoinDefs in QBF : Single-Table JoinDefs
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Single-Table JoinDefs
Although you can use a table as is for a query target, if you define a table as a single-table JoinDef you can:
Specify that the table is displayed in table-field format rather than simple-field format.
Set up a Master/Detail or Master/Master relationship between different fields (columns) in the same table.
Delete columns containing sensitive or unnecessary information from the display by using the ChangeDisplay operation.
Protect columns from updates but allow queries to display data by using the Rules operation.
Disable deletion of rows by using the Rules operation.
Save these formatting features in the database for later execution.