B5.3 Repository can demonstrate that referential integrity is created between all archived objects (i.e., AIPs) and associated descriptive information.
Every AIP must have some descriptive information and all descriptive information must point to at least one AIP, such that the integrity can be validated. This should be an easy requirement to satisfy and is a prerequisite for the next one.
Evidence: Descriptive metadata; persistent identifier/locator associated with AIP; documented relationship between AIP and metadata; system documentation and technical architecture; process workflow documentation.
Our descriptive metadata resides in an Oracle database (and it also exported into DDI XML format).
We use one piece of this metadata (the fingerprint) on a regular basis to conduct fixity checks; this is how we validate integrity.