Answer / 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.

Answer / bandivenkateswarlu

Index is used to retrive the fast access the data from the
database by using the indexes. This is the efficient
mechanizam to retrive the data differnt databases.

indexes are two types of given below.

1.primary index.
2. secondary index.

1.primary index.: is used to access the only one record from
the database. That means that should be unique. It is also
called one to one relation ship.
2.secondary index: is used to access the data only more than
one record data base. This is called the secondary index.
The secondary index is used to relation ship is the
one-to-many relationships.

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