Question 15328 – DSSSB PGT 2021
February 3, 2024Computer-Organization
February 3, 2024Relational-databases
| Question 12 |
Match the following with respect to RDBMS :
| (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii) | |
| (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i) | |
| (a)-(iv), (b)-(ii), (c)-(iii), (d)-(i) | |
| (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i) |
Question 12 Explanation:
→ Entity Integrity won’t support duplicate rows in a table
→ Domain Integrity enforces valid entries for a column
→ Referential integrity rows can’t be deleted which are used by other records
→ User defined integrity enforces some specific business rule that do not fall into entity or domain
→ Domain Integrity enforces valid entries for a column
→ Referential integrity rows can’t be deleted which are used by other records
→ User defined integrity enforces some specific business rule that do not fall into entity or domain
Correct Answer: B
Question 12 Explanation:
→ Entity Integrity won’t support duplicate rows in a table
→ Domain Integrity enforces valid entries for a column
→ Referential integrity rows can’t be deleted which are used by other records
→ User defined integrity enforces some specific business rule that do not fall into entity or domain
→ Domain Integrity enforces valid entries for a column
→ Referential integrity rows can’t be deleted which are used by other records
→ User defined integrity enforces some specific business rule that do not fall into entity or domain
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