The Paradox program is used to create and maintain the internal table structures and interrelationships. Appendix B of the Users Manual contains detailed information of field names, allowable values, key fields, etc. Although the user interface shields the average user from most of the complexity of the underlying database structure, the Supervisor should be familiar with the information shown in this appendix. Everyone can gain from a general understanding of the nine table types that comprise the WRDB:

 water resources data (Working, Master, and Alternate data files)

 Stations

 Station Groups

 Branches

 Parameter Codes (PCodes)

 Parameter Code Groups

 Compositing Codes (CCodes)

 Database Batch Tracking

 Quality Codes (QCodes)