Which of the following statements correctly describes referential integrity? More than one answer may be correct.

Referential integrity applies to data quality within the structure of a relational database.

Relational database users should take steps to link orphaned records with primary key fields to ensure referential integrity.

A language that is specific to the needs of the organization allows for referential integrity in a database.

For referential integrity to exist, data on both sides of the table relationship must be present.