现有数据库已移至Azure并由Azure移动服务使用 - Id属性异常

I had and existing database with 3 tables and relationships between them. Two of the tables have primary key columns named 'Id' that are integer columns. The third table has a compound primary key that consists of a foreign key relating to each of the other two tables (a linking table or many to many). I had and existing database with 3 tables and r