Which two statements are true about the tuning of PL/SQL code? (Choose two.)

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answerhappygod
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Which two statements are true about the tuning of PL/SQL code? (Choose two.)

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Which two statements are true about the tuning of PL/SQL code? (Choose two.)

A. Redundant SQL statements in PL/SQL code should be avoided.
B. Implicit data type conversion in PL/SQL code can improve performance.
C. Usage of the NOT NULL constraint in PL/SQL code can degrade performance.
D. If you have one PL/SQL program unit instead of multiple smaller executable sections, performance can be improved.
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