At the table level, you can control which operations each user access level (1–8) can do:

View records in a table (read privilege)

Change table record contents (update privilege)

Append new records to a table (extend privilege)

Delete records from a table (delete privilege)

When you create a table privilege scheme, all four table privileges are granted initially. That is, all table access levels are 1 by default (1 being the least restrictive level).