Figure 5.

Part of module seqdb and nsdb, extracted from the EMBL IDL specification. The interfaces BioSeq and SeqInfo are defined in module seqdb; The interfaces EntryInfo, NucSeq and EmblSeq are defined in module nsdb. NucSeq inherits from seqdb::BioSeq and EmblSeq inherits from NucSeq, seqdb::SeqInfo, and EntryInfo.