Clarion (programming language)
（重定向自AppGen）
Clarion is a commercial, 4GL, multi-paradigm, programming language and Integrated Development Environment from SoftVelocity used to program database applications. It is compatible with ISAM, SQL and ADO data access methods, reads and writes several flat file desktop database formats including ASCII, CSV, DOS (Binary), FoxPro, Clipper, dBase, and some relational databases via ODBC, MS SQL Server, Sybase SQL Anywhere and Oracle through the use of accelerated native database drivers, and XML, Clarion can be used to output to HTML, XML, plaintext, and PDF, among others.