IEM Database (in) consistency

Hi,

I was wondering... BigFIX  has as a design decision decided to not implement any foreign keys in the IEM database to optimize for speed. This is a valid decision, but it opens up for issues with data integrity, as data integrity then has to be managed explicitly. Furthermore, in debugging / error situations, it is pretty hard to determine if data in the DB is actually in an inconsistent state or not.
So, I am wondering if a tool or schema or something is available for doing actual database integrity verification?

Please help.

I didn't find the right solution from the Internet.

References
https://ibm.co/2uQ3IFk
Bitcoin Animation Explainer

Thanks