Q1. What are the different events in triggers?
(A) Define, Create
(B) Drop, Comment
(C) Insert, Update, Delete
(D) All of the mentioned
Answer: Insert, Update, Delete
Explanation:
Q2. Trigger are supported in
(A) Delete
(B) Update
(C) Views
(D) All of these
Answer: Views
Explanation:
Q3. Trigger are supported in
(A) Delete
(B) Update
(C) Views
(D) All of the above
Answer: Views
Explanation:
Q4. A command to remove a relation from an SQL database
(A) Delete table table_name
(B) Drop table table_name
(C) Alter table table_name
(D) Erase table table_name
Answer: Drop table table_name
Explanation:
Q5. Which of the following describes “Is-a-Relationship”?
(A) Dependency
(B) Aggregation
(C) Inheritance
(D) None of these
Answer: Dependency
Explanation:
Q6. The total participation by entities is represented in E-R diagram as
(A) Double line
(B) Dashed line
(C) Double rectangle
(D) Circle
Answer: Double line
Explanation:
Q7. Tables in second normal form
(A) Eliminate all hidden dependencies
(B) Eliminate the possibility of a insertion anomalies
(C) Have a composite key
(D) None of these
Answer: Eliminate all hidden dependencies
Explanation:
Q8. In E-R diagram generalization is represented by
(A) Ellipse
(B) Rectangle
(C) Triangle
(D) Dashed ellipse
Answer: Triangle
Explanation:
Q9. Data integrity constraints are used to:
(A) Ensure that duplicate records are not entered into the table
(B) Control who is allowed access to the data
(C) Improve the quality of data entered for a specific property
(D) None of these
Answer: Improve the quality of data entered for a specific property
Explanation:
Q10. A relation is in which normal form if an attribute of a composite key is dependent on an attribute of other composite key.
(A) First Normal Form
(B) Second Normal Form
(C) Third Normal Form
(D) Second or Third Formal Form
Answer: Third Normal Form
Explanation:
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