Domain includes a column of relation. Relational DBMS must maintain both the Entity Integrity and Referential Integrity independent of a concrete application. Users are responsible for maintaining both the Entity Integrity and Referential Integrity. Users may define the Entity Integrity or Referential Integrity in a corresponding data base schema. It is not possible to give a particular answer.
Important information is absent.
The cardinality and degree of the resultant relation do not depend on the cardinality and degree of the source relation. The cardinality and degree of the resultant relation are equal to the cardinality and degree of the source relation. 3.The degree of the resultant relation is equal to the degree of the source relation. The cardinality of the resultant relation does not exceed the cardinality of the source relation. Let X and Y be the names of tuple variables both of which range over the tuples of the relation Product.