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15. Select the true statement(s) about read modes in BW:
a. Read mode determines how the OLAP processor retrieves data during query execution and navigation
b. Three different types of read modes are available
c. Can be set only at individual query level
d. None of the above
ANSWER(S): A, B
Read mode determines how an OLAP processor retrieves data during query execution and navigation. Three types of read modes are available:
1. Read data during expand hierarchies
2. Read data during navigation
3. Read data all at once
Read mode can be set at info provider level and query level.