Where can I find documentation on what client library version interoperate with which server versions? I've been unable to find anything in the manual or archives. The only thing I've found is some information in the archives on certain psql versions. Is there a compatibility matrix somewhere for the client libraries? Specifically, I have a C application (ecpg/libpq), as well as perl DBI, built against PostgreSQL 7.4.1. Am I safe in upgrading the server to 8.1.3 before the application can be rebuilt? I've seen no problems on the test server, but... There's no system catalog monkey business - just plain old SQL. Wes