ERDRAW: A graphical schema specification tool

This document describes an X-window based tool called ERDRAW that support graphical specifications of conceptual database schemas. ERDRAW is based on an Extended Entity--Relationship (EER) model; an overview of this model is provided in appendix B. ERDRAW generates an output file that can be used as input to a database schema design and translation tool, called SDT. A full description of SDT can be found in the SDT reference manual issued as technical report LBL-27843. ERDRAW was implemented using C, and X11 based Xlib and Xview toolkit, on Sun 3 and Sun 4 workstations under Sun Unix OS 4.0.3 and Sun Unix OS 4.1. This document consist of the following sections: User's manual, written following the format of Unix manual entries; screen images illustrating the work with ERDRAW; a pictorial tutorial on how to use ERDRAW; a sample postscript output; the SDT command, input format, and a sample input file; a sample report listing attributes; a sample report listing subject terms.