If your product type hierarchy is relatively flat (only three or four levels deep), then there is less of a concern with database access.

如果产品类型层次结构相对简单(只有3或4层)，那么数据库访问就会简单一些。

youdao

If your product type hierarchy is relatively flat (only three or four levels deep), then there is less of a concern with database access.

如果产品类型层次结构相对简单(只有3或4层)，那么数据库访问就会简单一些。

youdao