PowerDesigner是Sybase公司的CASE工具集，使用它可以方便地对管理信息系统进行分析设计，它几乎包括了数据库模型设计的全过程。-Sybase PowerDesigner is the company' s CASE tool set, you can easily use it to management information systems analysis and design, which includes almost the entire process of designing the database model.