An ERD (Entity Relationship Diagram) is a graphical representation of the data in rest within a system (e.g. a business, an organization, an application) that is subject to analysis.
The U.S. EPA established the Reference Dose (RfD) Work Group to address these concerns. In preparing this report, the RfD Work Group has drawn on traditional report on risk assessment (NRC, 1983), to more fully articulate the use of noncancer, nonmutagenic experimental data in reaching regulatory decisions about the significance of exposures to chemicals.
request for information (RFI) Definition. A formal request for preliminary information for the purpose of evaluating potential bids for design services, construction services, or both. This request does not usually signify a firm commitment by an owner, but it provides information on potential bidders and their capabilities.