Final answer:
Referential integrity in databases is indeed a mechanism that ensures look-up values are valid by maintaining consistent references between tables. It is crucial for avoiding consistent errors and upholding data integrity.
Step-by-step explanation:
The statement 'Referential integrity is a mechanism for making sure that look-up values make sense' is true. Referential integrity is a concept used in databases to ensure that relationships between tables remain consistent. It means that a foreign key must always refer to an existing primary key in another, or the same, table, preventing orphaned records and ensuring that the references between tables are valid.
In the context of database management, consistent error is not acceptable as it would indicate that the integrity of the database is compromised. Coherence theory implies that for a set of beliefs or statements to be true, they must be coherent with each other. However, for the initial set of beliefs or statements, they must be verified or correspond to reality directly, essentially meaning they must be based on evidence or direct observation.