A、C/S和B/S
B、B2B和B2C
C、C/S和P2P
D、B/S
A、COUNT
B、SUM
C、MAX
D、AVG
A、DECLAREcursor_nameCURSORFORselect_statement
B、DECLARECURSORcursor_nameFORselect_statement
C、CREATEcursor_nameCURSORFORselect_statement
D、CREATECURSORcursor_nameFORselect_statement
A、SETPASSWORD
B、CHANGEPASSWORD
C、UPDATEPASSWORD
D、RENAMEUSER