The dbVOR schema. The blue tables (projects, technologies, experiments, traitmeta, and builds) map a string name to a database identifier and occasionally supply additional data. The yellow tables (members, member_aliases
, and traits) contain pedigree and phenotype data. The red tables (genotypes and genotypeblocks) contain the genotype data. Each record in genotypes contains the data for a member and single marker, while a record in genotypeblocks contains a block of data for a member and several hundred contiguous markers. The green table (snpblocks) provides an index into genotypeblocks, specifying where a particular marker is in a block of contiguous markers. The green tables (markers, marker_aliases, and marker_info) map a marker name to a database identifier and supply map position information. The allele_map table optionally remaps the allele names for a specified experiment and marker to different values. The samples table stores information about samples, the most important being the mapping from the sample identifier to the pedigree and person of the subject. The notes table provides a facility for documenting decisions made as the data are cleaned and processed.