When a database does not have accidental or deliberate modification, this is an example of good data integrity.
data integrity - Computer Definition
The quality of correctness, completeness, wholeness, soundness and compliance with the intention of the creators of the data. It is achieved by preventing accidental or deliberate but unauthorized insertion, modification or destruction of data in a database. Data integrity is one of the six fundamental components of information security (see Parkerian Hexad). See message integrity.