单项选择题
Which product must be installed on z/OS to allow a COBOL program running on that machine to access data on a remote DB2 for z/OS server?（）
A.DB2 for z/OS
B.DB2 Run-Time Client for z/OS
C.DB2 Connect Enterprise Edition for z/OS
D.z/OS Application Connectivity to DB2 for z/OS and OS/390
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A trigger can be created on which of the following objects?（）
A.View
B.Catalog Table
C.Stored Procedure
D.Global Temporary Table -
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Which of the following supports the XML data type?（）
A.A unique index
B.A composite index
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Which of the following can be used to ensure that once a row has been inserted in table TABLEX, the column MAINID in that row cannot be updated?（）
A.Define the column MAINID as NOT UPDATABLE
B.Define the column MAINID as a PRIMARY KEY
C.Define the column MAINID as a FOREIGN KEY
D.Define an UPDATE trigger on table TABLEX
