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.
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.