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單項選擇題

You create a package that contains PL/SQL variables that must be shared among several forms in the Travel application. You place the package in a library and attach the library to all the forms that need to share the data. Which parameter in the OPEN_FORM built-in must you set to ensure that changes made by one form are visible to the other forms in the application?()

A.data_mode 
B.paramlist 
C.query_mode 
D.session_mode 

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