The doc files:
- docs/schema.md
- docs/databases/postgres.tx
- docs/databases/sqlite.txt
are no longer up to date due to finish of the abstract schema work from T191231: RFC: Abstract schemas and schema changes and should be revisisted.
For example the sentence about sequences is no longer true and bytea is not so easy to support now (Some context under T257755#6863029)
Also foreign keys are no longer in use, CIDR is also removed