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RAD Studio VCL Reference
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TFieldDef.Required Property
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RAD Studio VCL Reference
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Indicates whether a value for the physical field in the underlying table is required.
property Required: Boolean;
__property Boolean Required;
Use Required to find out if a field in a dataset must have a value. If Required is true, the field must have a value. If Required is false, the field can be left blank.
When adding field definitions to a dataset, set Required to specify whether blank values for the new field should be prohibited.
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Description