Which of the following best defines a Database? MCQ with Answer and Explanation
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Question #1
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Which wildcard character is used with the SQL LIKE operator to represent zero, one, or multiple characters?
Correct Answer: Option A
Explanation:
The percentage sign (%) is used as a wildcard character to match any sequence of zero or more characters in an SQL LIKE string comparison query.
The percentage sign (%) is used as a wildcard character to match any sequence of zero or more characters in an SQL LIKE string comparison query.
This question belongs to:
Computer
Database Management System (DBMS)
Question #2
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Which of the following is NOT an advantage of DBMS over traditional file systems?
Correct Answer: Option B
Explanation:
DBMS generally involves higher initial costs and complexity compared to simple file systems, though it offers better control over redundancy, independence, and security.
DBMS generally involves higher initial costs and complexity compared to simple file systems, though it offers better control over redundancy, independence, and security.
This question belongs to:
Computer
Database Management System (DBMS)
Question #3
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Which level of database architecture defines the entire logical structure of the database, including entities, relationships, and constraints, independent of physical storage?
Correct Answer: Option D
Explanation:
The Conceptual (or Logical) level describes what data is stored in the entire database and what relationships exist among those data points.
The Conceptual (or Logical) level describes what data is stored in the entire database and what relationships exist among those data points.
This question belongs to:
Computer
Database Management System (DBMS)
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