LINC 4GL

LINC ("Logic and Information Network Compiler") is a fourth-generation programming language, used mostly on Unisys computer systems. Background LINC was originally developed as a short-cut (or template) by two programmers to reproduce and automate the production of computer applications for different companies, that had similar requirements and specifications. The requirements were similar, because the companies followed a common, generic, business model. That is, these businesses dealt with "commodities", or "parts", or "suppliers", or "customers" (named "components" in LINC terminology). These were "manufactured", or "assembled", or "purchased", or "sold" (actions termed "events" in LINC terminology). These components and events were the "interface specifications" or "ispecs" and contained the database definitions, screen designs, and business rules of the application system.