Referential Integrity Constraint: Foreign Key

A relationship with referential integrity means that the foreign key must have an existing reference in the parent table.Question 4Select one:TrueFalse

A _________ integrity constraint requires that the values appearing in specified attributes of any tuple in the referencing relation also appear in specified attributes of at least one tuple in the referenced relation.Question 7Answera.Specificb.Referentialc.Primaryd.Referencing

.8 Identify the foreign keys in this schema. Explain how the entity and referential integrity rules apply to these relations.

______ is NOT a type of constraint in SQL language?FOREIGN KEYPRIMARY KEYUNIQUEALTERNATE KEY

relational integrity constraints