Software Applications Programming Errors and solutions.

Grant/Revoke are the keywords which uses to grant/revoke privileges on an object to/from a user/group. Grant is a keyword you use when you want to authorize/authenticate. a principal and Revoke is the Keyword used when you want to take back the Authorization/authentication from the Principal. Principal refers to Lo-gin at instance level.Database user at Database level. Grant,revoke,deny,with grant are object level security.Grant means giving permission on a particular object to user.Command: grant privilege on object name to username. Revoke means taking back the permission. Command: revoke privilege on object name from username. Deny means restrict user not to do something command: deny privilege on object name to username. With grant means by using grant user can give grant permission to other user command: grant privilege on object name to user with grant.