THIS PAPER PRESENTS A PDES/STEP BASED RELATIONAL DATABASE STRUCTURED FOR PRIMARY INFORMATION REQUIRED IN THE ASSEMBLY OF PRINTED CIRCUIT BOARDS (PCB). THIS INCLUDES THE EXTRACTION OF DATA FROM A PCB CAD SYSTEM AND THE SUBSTANTIATION OF DATA REQUIREMENT IN BOARD FABRICATION AND ASSEMBLY. THE DATA ARE MODELED FOLLOWING THE METHODOLOGY AND AVAILABLE SPECIFICATION OF PDES/STEP. LIMITATIONS OF THE PRESENT PDES/STEP SPECIFICATION ARE PERCEIVED. DATABASE GENERATION AND INQUIRY PROGRAMS, AND A TRANSLATOR LINKING THE CAD TO THE DATABASE, ARE DEVELOPED. IN ADDITION, THE DATABASE'S ROLE IN A FMS FOR PCB IS DISCUSSED.