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In the COURSE_ENROLLMENT form module, you define a master-detail relation between the COURSES_OFFERED data block and the STUDENT data block, respectively. To implement block coordination, which statement must be true?（）
A: The Enforce Primary Key property on the STUDENT block is set to Yes. 
B: The Alias property on the COURSES_OFFERED block is set to Student. 
C: The Copy Value from item property on the foreign key item in the STUDENT blocks is set to the primary key item of the COURSES_OFFERED block. 
D: The Synchronize with item property on the foreign key item in the STUDENT block is set to the primary key item of the COURSES_OFFERED block.

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出自：Oracle认证

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