Which DB access method (OSAM or VSAM) is used for primary index or secondary i

Which DB access method (OSAM or VSAM) is used for primary
index or secondary index and why?

Question Posted / sd

Which DB access method (OSAM or VSAM) is used for primary index or secondary index and why?..

VSAM is used for primary or secondary index because the
data need to stored in key sequence datasets.

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