Defined in file genome_collection.asn C++ class: CGC_DbTagAlias GC-DbTagAlias ::= SEQUENCE { refseq Dbtag OPTIONAL, -- the refseq assembly release-id genbank Dbtag OPTIONAL, -- the genbank assembly release-id -- Similarity: relationship between 2 assemblies represented by DbTags -- Can be expanded to multiple level of identicality -- can use bitmap to flag ambiguity between different identicality levels similarity INTEGER { unknown (0) , identical (1) , different (255) } }