Question

Which of the following statements is a disadvantage of relational data model?
Select one:
a. Data entities are dependant to each other in a relational database and can not be separated.
b. It does not support many-to-many relationship.
c. Having a large number of tables increases the Guery processing time.
O d. Operations like joins are not allowed in relational databases.

Answer 1

Answer:

no. d , operations like joins are not allowed in relational databases .

Explanation:

because only relational data and model , so the ans. will be operations like joins are not allowed in relational databases .