| 1. | The Data Definition Language ( DDL ) manages table and index structure.
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| 2. | These repositories all use the NDAR GUID as well as common data definitions.
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| 3. | ESE also extends transaction semantics from data manipulation operations to data definition operations.
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| 4. | It is responsible for creating and updating the DoDTR data definitions and business rules.
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| 5. | Using these data definitions, a range of software validation checks can be carried out.
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| 6. | These teams frequently used internal data definitions that were incompatible with other computer systems.
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| 7. | Data definition operations supported in this fashion include AddColumn, DeleteColumn, CreateIndex, DeleteIndex, CreateTable and DeleteTable.
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| 8. | During systems design, therefore, data definitions are established which place limits on what constitutes valid data.
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| 9. | Thus a macro might generate numerous assembly language instructions or data definitions, based on the macro arguments.
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| 10. | Passing customized data types or objects requires both components to have knowledge of the custom data definition.
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