The Global conceptual Schema in a distributed database contains inform – McqOptions

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1.	The Global conceptual Schema in a distributed database contains information about global relations. The condition that all the data of the global relation must be mapped into the fragments, that is, it must not happen that a data item which belongs to a global relation does not belong to any fragment, is called :
A.	Disjointness condition
B.	Completeness condition
C.	Reconstruction condition
D.	Aggregation condition
Answer» C. Reconstruction condition

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