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You want to implement a master-detail relation between data blocks based on object tables. How would you do this? （）
A:Create the relation manually and coordinate the blocks using triggers. 
B:Base the relation on a REF pointer using the Data Block Wizard. 
C:Base the relation on a foreign key using the Data Block Wizard. 
D:This task is not possible because master-detail relations can be implemented only for blocks based on relation tables.

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出自：Oracle认证

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