Which control provides the GREATEST assurance of database integrity?

The control that provides the greatest assurance of database integrity is related to table link/reference checks. This mechanism is essential for maintaining referential integrity within a database, ensuring that relationships between tables remain consistent and valid. For example, if there is a foreign key constraint set up between two tables, these checks enforce that a record in one table corresponds to an existing record in another, thereby preventing orphaned records and ensuring that all relationships are accurate.

Such checks play a crucial role in preventing data anomalies and inconsistencies that could arise from improper data entry or deletion processes. They help maintain the data's reliability as they ensure that only valid and existing data can be referenced across tables, therefore upholding the integrity of the database as a whole.

While audit logs, query/access time checks, and rollback/rollforward features play important roles in database management, they each focus on different aspects of data handling rather than directly enforcing data integrity between linked tables. Audit logs help in tracking changes and detecting unauthorized modifications, access time checks assist in performance management, and rollback/rollforward features provide mechanisms for recovering data after anomalies or failures. However, none of these features directly ensure the relational and referential integrity of the database in the way that table link/reference checks do. Thus,