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- 单项选择题The CALC function is used several times within the sales report. To simplify maintenance you want to store the function in one place and call it from within your PL/SQL trigger code. Which node would you use in object navigator to create a report level programme unit to store the function?（）
A、Programme units.
B、PL/SQL libraries.
C、Database object.
D、Built in packages.
- A
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