Knowledge Focus: By setting the permissions operation to control the scope of application is essentially a user's operation of the database data query,
kobe bryant shoes, add,
lebron james vii, delete,
nba shoes, change the limit
operation by setting permissions to control applications operating range of users of the system
essence, the data on the database query,
cheap lebron shoes, add,
kobe bryant v, delete,
nike basketball shoes, change the limit