firebird3.0-server-core 3.0.5.33100.ds4-3 (armhf binary) in ubuntu focal

 Firebird database engine and support libraries. This package is required for
 embedded (serverless) access to local databases with the tools packaged in
 firebird3.0-utils or other binaries linked to the firebird client library,
 libfbclient2.
 .
 The rest of the binaries needed for running a full-featured,
 remotely-accessible Firebird server are in the firebird3.0-server package.