![EF/TRI Logo](https://webarchive.library.unt.edu/eot2008/20090512020227im_/http://www.epa.gov/enviro/gif/ef_tris.gif)
Model
This information is provided for technical experts who intend to work directly with the database. Other users can retrieve information using the TRI Query Form.The TRI_FORM_R table is composed of columns from tables shown in the following the TRI model. The TRI_FORM_R table can be accessed through and is used by the TRI Customized Query, the TRI EZ Query, and the Form R Reports.
The TRI entities in Envirofacts are organized into the subject areas shown below. Click on a subject area to view the entities.
![TRI Model](https://webarchive.library.unt.edu/eot2008/20090512020227im_/http://www.epa.gov/enviro/gif/tri_model.gif)