Which clause is used in a SQL SELECT statement to organize matching rows into summary groups based on one or more columns? MCQ with Answer and Explanation
Question
Report Error
Discuss this Question (0)
Practice More Database Management System (DBMS) Questions
Question #1
Report Error
What is the difference between an inner join and an outer join?
Correct Answer: Option A
Explanation:
Inner join returns rows where the join condition matches. Outer join (left, right, full) returns unmatched rows as well with NULLs.
Inner join returns rows where the join condition matches. Outer join (left, right, full) returns unmatched rows as well with NULLs.
This question belongs to:
Computer
Database Management System (DBMS)
Question #2
Report Error
Which normal form eliminates transitive dependencies?
Correct Answer: Option C
Explanation:
Third Normal Form (3NF) removes transitive dependencies on non-prime attributes.
Third Normal Form (3NF) removes transitive dependencies on non-prime attributes.
This question belongs to:
Computer
Database Management System (DBMS)
Question #3
Report Error
The actual collection of data tuples stored in a table at any specific point in time is called a what?
Correct Answer: Option A
Explanation:
A Relation Instance is the specific collection of data rows (tuples) present in a table at a given moment. It changes frequently as data is modified.
A Relation Instance is the specific collection of data rows (tuples) present in a table at a given moment. It changes frequently as data is modified.
This question belongs to:
Computer
Database Management System (DBMS)
No comments yet. Be the first to start the discussion!