Which schema architecture level describes how the data is physically stored on disk storage media? MCQ with Answer and Explanation

Question
Which schema architecture level describes how the data is physically stored on disk storage media?
A. External Level
B. Conceptual Level
C. Logical Level
D. Internal Level
Answer: Option D
Solution (By JKSSB Mock Tests)
The Internal (or Physical) level of the three-schema architecture describes the physical storage structure and access paths of the database.
This question belongs to: Computer Database Management System (DBMS)
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Practice More Database Management System (DBMS) Questions

Question #1
What is the purpose of the SQL 'DEFAULT' constraint?
A. To define a primary key
B. To set a foreign key
C. To enforce uniqueness
D. To provide a default value for a column when no value is supplied
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Correct Answer: Option D

Explanation:
DEFAULT assigns a default value to a column if an INSERT statement does not specify a value.
This question belongs to: Computer Database Management System (DBMS)
Question #2
Which SQL keyword is used within a SELECT query to filter records matching a specified pattern using wildcards?
A. IN
B. LIKE
C. BETWEEN
D. EXISTS
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Correct Answer: Option B

Explanation:
The LIKE operator is specifically used in a WHERE clause to perform pattern matching on string columns using wildcards (% and _).
This question belongs to: Computer Database Management System (DBMS)
Question #3
In an Entity-Relationship (ER) diagram, what geometric shape is used to represent an entity type?
A. Ellipse
B. Triangle
C. Rectangle
D. Diamond
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Correct Answer: Option C

Explanation:
In standard ER modeling notation, rectangles are used to represent entity sets or entity types.
This question belongs to: Computer Database Management System (DBMS)
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