| 21. | Primary keys are defined in the ANSI SQL Standard, through the PRIMARY KEY constraint.
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| 22. | Primary keys are defined in the ANSI SQL Standard, through the PRIMARY KEY constraint.
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| 23. | The only significance of the surrogate key is to act as the primary key.
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| 24. | But the primary key to making it all work was, inevitably, carefully calibrated performances.
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| 25. | The field surveyId is used as the primary key.
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| 26. | The foreign key is typically a primary key of an entity it is related to.
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| 27. | If " two " rows have identical primary keys, they are considered the same row.
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| 28. | Database tables in a cache group must each have a defined primary key-foreign key constraints.
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| 29. | The employee number will be unique in the organization and would be the primary key.
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| 30. | A " primary key " assigns a field to its " special order table ".
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