The basic purpose of an index is to speed up access to specific records within a table. Also, indexes eliminate the necessity for re-sorting the table when you want it to be in a different order. You could end up with dozens of separate index files on your disk. The controlling index is determined by a command that calls the tag. Used by dBASE IV, V, FoxPro.
All tags are in one index file.
You would end up with one additional index file on your disk. You would have as many of these fields as you have indexes. Changes to the table automatically change the pointers. Once you have created an index in Access, you don't have to worry about it again. Disadvantages are that processing is slowed, especially if you have many indexes.