When creating a hierarchical report,the groups are formulated using the GROUP BY clause in the SQL query formulation.
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Q18: In a 1-M updatable query,update operations are
Q19: In a hierarchical form involving a 1-M
Q20: In a 1-M updatable query,to insert a
Q21: In the "three schema architecture",views belong to:
A)
Q22: Figuer:
CUSTOMER (primary key = CID)
Q24: The following SQL2 command is executed: CREATE
Q25: The use of views in application development
Q26: To process queries that reference a view,the
Q27: Like a form,a report can change the
Q28: When defining a view using SQL:
A) The
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