The total number of tuples (rows) contained within a relational database table is called its what? MCQ with Answer and Explanation
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Question #1
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A candidate key is:
Correct Answer: Option B
Explanation:
A candidate key is a minimal set of attributes that can uniquely identify a tuple.
A candidate key is a minimal set of attributes that can uniquely identify a tuple.
This question belongs to:
Computer
Database Management System (DBMS)
Question #2
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Which of the following is an example of DML command?
Correct Answer: Option D
Explanation:
INSERT is a Data Manipulation Language (DML) command used to add data to tables.
INSERT is a Data Manipulation Language (DML) command used to add data to tables.
This question belongs to:
Computer
Database Management System (DBMS)
Question #3
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Which of the following database models organizes data in a tree-like upside-down structure with parent-child relationships?
Correct Answer: Option B
Explanation:
The Hierarchical Model stores data in a tree-like configuration where each child node has exactly one parent node.
The Hierarchical Model stores data in a tree-like configuration where each child node has exactly one parent node.
This question belongs to:
Computer
Database Management System (DBMS)
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