Q1. Which one of the following attribute can be taken as a primary key?
(A) College
(B) Id
(C) Student Name
(D) Department
Answer: Id
Explanation:
Q2. The default extension for an Oracle SQL*Plus file is:
(A) .txt
(B) .sql
(C) .pls
(D) .ora
Answer: .sql
Explanation:
Q3. A table is in which normal form if only candidate keys are the determinants.
(A) 1NF
(B) 2NF
(C) 3NF
(D) BCNF
Answer: BCNF
Explanation:
Q4. The subset of super key is a candidate key under what condition?
(A) All subsets are super keys
(B) No proper subset is a super key
(C) Subset is a super key
(D) Each subset is a super key
Answer: No proper subset is a super key
Explanation:
Q5. In an Entity-Relationship Diagram Oval represents
(A) Attributes
(B) Entity sets
(C) Relationship
(D) Tables
Answer: Attributes
Explanation:
Q6. In an Entity-Relationship Diagram diamond represents
(A) Attributes
(B) Entity sets
(C) Relationship
(D) Tables
Answer: Relationship
Explanation:
Q7. In an Entity-Relationship Diagram Rectangles represents
(A) Attributes
(B) Entity sets
(C) Relationship
(D) Tables
Answer: Entity sets
Explanation:
Q8. Which among the following is not a transaction control language command?
(A) Commit
(B) Rollback
(C) Grant
(D) End
Answer: End
Explanation:
Q9. Procedural code that is automatically executed in response to certain events on a particular table of view in a database:
(A) Cursor
(B) Transaction
(C) Trigger
(D) Stored Procedure
Answer: Trigger
Explanation:
Q10. DML is stands for
(A) Data Manipulation Language
(B) Data Maintaining Language
(C) Discrete Modeling Language
(D) Data Modeling Language
Answer: Data Manipulation Language
Explanation:
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