Keys made up of two or more attributes are called composite keys.

Answer: Option A

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.