Question

Suppose Access prevents you from entering a value in the foreign key field of a related table because that value does not exist in the primary key field of the primary table. Access has just enforced a concept known as

Answer 1

Access enforces referential integrity by preventing entry of a foreign key that does not exist in the corresponding primary table's primary key field, ensuring database consistency and accuracy.

Step-by-step explanation:

Access has enforced a rule known as referential integrity, which is a concept in relational database management systems that ensures relationships between tables remain consistent. When you enter data in a foreign key field of a related table, Access checks whether that value exists in the primary key field of the corresponding primary table. If the value does not exist, Access will not allow the entry because it violates referential integrity. This rule is crucial because it prevents the occurrence of orphan records i.e., records that do not have a corresponding key in their related table and thus preserves the accuracy and consistency of data within the database.