Database-Management-System
August 29, 2024Database-Management-System
August 29, 2024Database-Management-System
| Question 814 |
Identify the true statement from the given statements.
(1) Lossless, dependency preserving decomposition into 3NF is always possible
(2) Any relation with two attributes is in BCNF
(1) Lossless, dependency preserving decomposition into 3NF is always possible
(2) Any relation with two attributes is in BCNF
| (1) | |
| (2) | |
| (1) and (2) | |
| None of these |
Question 814 Explanation:
Both the statements are true.
(1) TRUE: Lossless, dependency preserving decomposition into 3NF is always possible but not in BCNF. In BCNF lossless is mandatory but dependency preserving is not mandatory.
(ii) TRUE: Any relation with two attributes is in BCNF
(1) TRUE: Lossless, dependency preserving decomposition into 3NF is always possible but not in BCNF. In BCNF lossless is mandatory but dependency preserving is not mandatory.
(ii) TRUE: Any relation with two attributes is in BCNF
Correct Answer: C
Question 814 Explanation:
Both the statements are true.
(1) TRUE: Lossless, dependency preserving decomposition into 3NF is always possible but not in BCNF. In BCNF lossless is mandatory but dependency preserving is not mandatory.
(ii) TRUE: Any relation with two attributes is in BCNF
(1) TRUE: Lossless, dependency preserving decomposition into 3NF is always possible but not in BCNF. In BCNF lossless is mandatory but dependency preserving is not mandatory.
(ii) TRUE: Any relation with two attributes is in BCNF