Question:
A domain in a relational database refers to:
A domain in a relational database refers to:
Updated On: Mar 29, 2025
- The overall database structure
- A specific set of valid values for an attribute
- A table containing multiple records
- A relationship between two tables
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The Correct Option is B
Solution and Explanation
A domain in a relational database refers to a specific set of valid values for an attribute.
(1) The overall database structure: This describes the schema, not a single domain.
(2) A specific set of valid values for an attribute: A domain defines the set of possible values that an attribute can take. For instance, the domain of a "gender" attribute might be {"Male", "Female", "Other"}.
(3) A table containing multiple records: This describes a table or relation itself, not a domain.
(4) A relationship between two tables: This describes a relationship, such as a foreign key constraint, not a domain.
Therefore, a domain in a relational database refers to: (2) A specific set of valid values for an attribute.
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