3) Given the two tables of records below, where the foreign key in Table B refers to records of table A. Identify and briefly explain the record(s) that violate(s) the constraint of (a) the entity integrity rule (b) the referential integrity rule. Table A field1 Table B field1 PK field2 PK FK 3 NULL NULL 5 3 5 A-B relationship (FK in Table B is referring to PK in Table A) Violation of the entity integrity rule- 1 Violation of the referential integrity rule