____ is/are the central activity during the parsing phase in query processing.
A) Database statistics
B) Data sparsity
C) SQL query
D) Query optimization
Correct Answer:
Verified
Q26: All data in a database are stored
Q27: The data cache is where the data
Q29: When setting optimizer hints,_ instructs the optimizer
Q31: On the server side,the DBMS environment must
Q33: The data cache or _ is a
Q34: To generate database object statistics manually,you could
Q35: Knowing the sparsity of a column helps
Q36: If there is no index, the DBMS
Q38: The _ is a shared, reserved memory
Q47: The DBMS the data and sends the
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