I read a statement from an exercise: construct a database instance which conforms to diagram 1 but not to diagram 2. The diagrams are different n-ary relationships that have different relationships. Diagram 1 has a many to one to many to one relationship. Diagram 2 has many to many to many to one re
我已经安装了SQL Server Management Studio2005,并且正在尝试为我创建的数据库创建数据库关系图。我在本地SQL服务器上创建了数据库,当我尝试创建新的数据库关系图时,它不允许我这样做。它只是给了我一个选择:它没有为我提供创建新数据库关系图的任何选项。这很奇怪,因为我还连接到了内部网络上的另一个SQL Server2005实例,并且我可以选择在该服务器上创建