Λύση - Ερώτηση πολλαπλών επιλογών
Επιλέξτε 1 από τις 4 απαντήσεις
| They ensure that the records contained in related tables will not be deleted. | They ensure that the related fields contain numbers. |
| They ensure that the related fields are not primary keys. | They ensure that the records can be copied from one table to another one. |
| Κωδικός ερώτησης: 10809 | 10/15 | |
| ΠΡΟΗΓΟΥΜΕΝΗ ΕΡΩΤΗΣΗ | ΕΠΟΜΕΝΗ ΕΡΩΤΗΣΗ | |
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What do referential integrity rules ensure when they are applied between related fields? |
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