Keys made up of two or more attributes are called composite keys.
A. True
B. False
Answer: Option A
Solution (By Examveda Team)
Option1: True- In the relational model, a composite key is a key that is made up of two or more attributes. This means that the combination of these attributes uniquely identifies a tuple in a relation.
- Composite keys are commonly used in database design to ensure data integrity and to establish relationships between tables.
Option2: False
- This statement is incorrect. Keys made up of two or more attributes are indeed called composite keys in the relational model.
- Composite keys play an important role in database normalization and help in reducing redundancy and improving data integrity.
Conclusion:
Based on the explanation provided, the correct option is Option1: True. Keys made up of two or more attributes are called composite keys in the relational model.
This Question Belongs to Database >> The Relational Model And Normalization
Related Questions on The Relational Model and Normalization
A. A → B.
B. A → C.
C. A → (B,C).
D. (B,C) → A.
A. normal forms.
B. referential integrity constraints.
C. functional dependencies.
D. None of the above is correct.
A relation is in this form if it is in BCNF and has no multivalued dependencies:
A. second normal form.
B. third normal form.
C. fourth normal form.
D. domain/key normal form.
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