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What is an index?
By default system will create the primary index or User can
create,if user How?
And also Secondary indexes by User or by defaultly system?
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Answer Posted / jenny
Indexes are a sorted copy of the table that exist in the
database which helps in faster retrival of data from the
database.
Primary Index : User cannot create a primary index, the
system creates a primary index by default based on the
primary keys of the table.
Secondary Index : The secondary indexes are created by the
user.we can create a maximum of upto 15 secondary indexes
for a table.
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