建模一直用的mysql workbeanch，还有啥类似的好工具推荐么？
顺便问下那个虚线和实线有啥区别？
powerdesigner
对于第二个问题，官方文档有介绍：
http://dev.mysql.com/doc/workbench/en/wb-relationship-tools.html
An identifying relationship is indicated by a solid line between the tables and a nonidentifying relationship is indicated by a broken line.