Best way to design a table with m:n relation

问题

What is the best way to design a table for a m:n relation between two entities??

回答1:

Three tables. One defining the first entity, one defining the second, and a third representing the relationship between them.

• Table 1 (first entity): T1Id, T1Name
• Table 2 (second entity): T2Id, T2Name
• Table 3 (relationship): T1Id, T2Id

来源：https://stackoverflow.com/questions/29400091/best-way-to-design-a-table-with-mn-relation