4 International Journal of Plant Genomics Genotype SNP Sample Tracking Sequencing Phenotype Expression Species Colleague Comparative map Literature Primers EST EST in Genbank Figure 2: Modular view of the TreeGenes database schema. The TreeGenes database (http://dendrome.ucdavis.edu/treegenes/) is a fully relational PostgreSQL database with a total of ten modules. These modules have connections supported by interfaces that allow queries across these data types. Current development is focused on fully incorporating the genotype and phenotype modules. Figure 3: Comparative mapping (CMAP) interface applied to Pinaceae. The modiﬁed version of Cmap utilized to represent the genetic map unit in TreeGenes is highly interactive. This interface allows for the visualization of comparative map builds including matrix views that display the correspondences between the map sets. Cmap’s internal links also provide detailed supporting information on molecular markers, primer sequences, species, and publications. analysis results. Tables, formatted text, and links are provided for viewing summary and detailed information. Submission includes the generation, formatting, and actual submission of the required ﬂat ﬁles. Since the TreeGenes database is home to many species, the database is organized to maintain independent species and project sets while search interfaces have been developed to support comparative queries. 2.2.6. Resequencing interface The Sample Tracking, Primers, Sequencing, and Genotype modules are currently accessible through an interactive interface that includes a growing library of predeﬁned queries (Figure 5). Each template provides a simpliﬁed view of an underlying query by means of a text description