供应商的考核与供应商的选择有何区别？

A. 正确
B. 错误

A. Foreign key references cannot cross schema boundaries.
B. A DB2 user must be created before a schema with the same name can be created.
C. If no schema is specified when an object is created, the default schema PUBLIC is used.
D. A schema enables the creation of multiple objects in a database without encountering namespace collisions.

A. 材料买价（不含增值税）
B. 运杂费
C. 储存保管费
D. 入库前加工整理费
E. 所付的消费税

A. 反比
B. 正比
C. 无关
D. 无法确定