Figure 1

Database schema. Five main relational entities and their relations are shown. Each row of the “genome” table describes a sequenced genome. Each row of the “contig” table contains the nucleotide sequence of a plasmid (for completed genomes) or contig (for draft genomes). Each row of the “orf” table lists coordinates and coding direction of an ORF. Each row of the “orth_orf” the table assigns an ortholog family identifier (“orth_orf_id”) to an ORF. Each row of the “orth_igs” table defines a unique intergenic spacer (IGS).