This appendix describes the database tables and fields that make up Drupal core. The descriptions are taken from the
hook_schema() implementations in the core modules'
.install files, with minor changes for clarity. The information is reproduced here for your convenience.
Primary keys are indicated by bold italic type; indices are indicated by bold type. Multicolumn indices are not shown unless the index is the primary index for the table. You can find current table definitions in your Drupal installation within the schema hook of a module's
.install file or using the contributed schema module, found at http://drupal.org/project/schema. Definitions for nonmodule core tables are in the