There are 5 records in a database.
Name Age Occupation Category
Rama 27 CON A
Abdul 22 ENG A
Jeniffer 28 DOC B
Maya 32 SER D
Dev 24 MUS C
There is an index file associated with this and it contain the values 1, 3, 2, 5 and 4. Which one of the fields is the index built form?