Which of the following operations need the participating relations to be union compatible?

Related MCQs

• What will be the number of columns of CARTESIAN PRODCUT if the participating relations have 5 and 7 columns respectively?
• What will be the number of columns of CARTESIAN PRODCUT if the participating relations have 5 and 20 rows respectively?
• Which property ensures that each functional dependency is represented in some individual relations resulting after decomposition?
• Which of the following constitutes a basic set of operations for manipulating relational data?
• Relations produced from an E-R model will always be in
• The different classes of relations created by the technique for preventing modification anomalies are called:
• In the relational model, relationships between relations or tables are created by using:
• For some relations, changing the data can have undesirable consequences called:
• One solution to the multivalued dependency constraint problem is to: split the relation into two relations, each with a single theme.
• Which category of users need not be aware of the presence of the database system?