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Working with Constraints
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Field components in client datasets or BDE-enabled datasets can use SQL server constraints. In addition, your applications can create and use custom constraints for these datasets that are local to your application. All constraints are rules or conditions that impose a limit on the scope or range of values that a field can store.

See Also

Working with Field Component Methods at Runtime

Displaying

Setting a Default Value for a Field

Persistent Field Components

Using Object Fields

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