[electroly]

I'm curious how this squares up with what someone linked elsewhere: https://github.com/edgedb/edgedb/discussions/3403

> EdgeDB does not treat Postgres as a simple standard SQL store. The opposite is true. To realize the full potential of the graph-relational model and EdgeQL efficiently, we must squeeze every last bit of functionality out of PostgreSQL's implementation of SQL and its schema.

I don't see how this and what you're saying can both be true at the same time. Is EdgeDB tightly coupled to the implementation of PostgreSQL, or isn't it? Is there really a chance that EdgeDB could support other databases, or not really? I don't think there's anything wrong with the answers being "yes" and "no", respectively; that's actually what I'd expect. It would be more unusual to try to do this in an implementation-agnostic way.

[JadedBlueEyes]

I think what they mean by this is that EdgeDB's query language should not be coupled to Postgres, but EdgeDB itself should use Postgres specific SQL features to maximise performance - so you couldn't drop in MariaDB without changing code in EdgeDB, but in theory you could write another backend that takes the same queries and uses MariaDB or MongoDB or something custom under the hood.

[colinmcd]

Exactly, implementation coupling vs interface coupling.