Referential Integrity - How to Discuss

Referential integrity

What is referential integrity and how is it achieved? Referential integrity refers to the precision and consistency of data within a relationship. In a relationship, the data is related between two or more tables. This is accomplished by referencing a foreign key (in a related table) to a primary key value (in a primary or primary table).

How is referential integrity ensures database consistency?

How referential integrity ensures the consistency of primary keys in the database. The primary key of a database table is a unique identifier that is assigned to each data record. Unknown key. A foreign key is an identifier in one table that corresponds to the primary key in another table. An example of a referential constraint. Benefits of Link Restrictions.