A synonym for chloroform is().
A、trichloromethane
B、sulfuric chlorohydrin
C、chlorine gas
D、4-methyl phenol
A、trichloromethane
B、sulfuric chlorohydrin
C、chlorine gas
D、4-methyl phenol
A、A.Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command CREATE PRIVATE SYNONYM EDL_VU FOR mary.EMP_DEPT_LOC_VU; then he can prefix the columns with this synonym. B、B.Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command CREATE SYNONYM EDL_VU FOR mary.EMP_DEPT_LOC_VU; then he can prefix the columns with this synonym. C、C.Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command CREATE LOCAL SYNONYM EDL_VU FOR mary.EMP_DEPT_LOC_VU; then he can prefix the columns with this synonym. D、D.Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command CREATE SYNONYM EDL_VU ON mary(EMP_DEPT_LOC_VU); then he can prefix the columns with this synonym. E、E.Scott cannot create a synonym because synonyms can be created only for tables. F、F.Scott cannot create any synonym for Mary's view. Mary should create a private synonym for the view and grant SELECT privilege on that synonym to Scott.
A、Scott can create a synonym for the EMP_DEPT_LOC_VU bus using the command: CREATE PRIVATE SYNONYM EDL_VU FOR mary.EMP DEPT_LOC_VU; then he can prefix the columns with this synonymn. B、Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command: CREATE SYNONYM EDL_VU FOR mary.EMP_DEPT_LOC_VU; then he can prefix the columns with this synonym. C、Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command: CREATE LOCAL SYNONYM EDL_VU FOR mary.EMP DEPT_LOC_VU; then he can prefix the columns with this synonym. D、Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command: CREATE SYNONYM EDL_VU ON mary(EMP_DEPT_LOC_VU); then he can prefix the columns with this synonym. E、Scott cannot create a synonym because synonyms can be created only for tables. F、Scott cannot create any synonym for Mary's view. Mary should create a private synonym for the view and grant SELECT privilege on that synonym to Scott.
A、A. Scott can create a synonym for the EMP_DEPT_LOC_VU bus using the command: CREATE PRIVATE SYNONYM EDL_VU FOR mary. EMP DEPT_LOC_VU; then he can prefix the columns with this synonymn. B、B. Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command: CREATE SYNONYM EDL_VU FOR mary. EMP DEPT_LOC_VU; then he can prefix the columns with this synonym. C、C. Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command: CREATE LOCAL SYNONYM EDL_VU FOR mary. EMP DEPT_LOC_VU; then he can prefix the columns with this synonym. D、D. Scott cannot create a synonym because synonyms can be created only for tables. E、E. Scott cannot create any synonym for Mary's view. Mary should create a private synonym for the view and grant SELECT privilege on that synonym to Scott.
A、Scott can create a synonym for the EMP_DEPT_LOC_VU bus using the command: CREATE PRIVATE SYNONYM EDL_VU FOR mary.EMP DEPT_LOC_VU; then he can prefix the columns with this synonymn. B、Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command: CREATE SYNONYM EDL_VU FOR mary.EMP_DEPT_LOC_VU; then he can prefix the columns with this synonym. C、Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command: CREATE LOCAL SYNONYM EDL_VU FOR mary.EMP DEPT_LOC_VU; then he can prefix the columns with this synonym. D、Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command: CREATE SYNONYM EDL_VU ON mary(EMP_DEPT_LOC_VU); then he can prefix the columns with this synonym. E、Scott cannot create a synonym because synonyms can be created only for tables. F、Scott cannot create any synonym for Mary’s view. Mary should create a private ynonym for the view and grant SELECT privilege on that synonym to Scott.
A、CREATE PUBLIC SYNONYM EDL_VU ON emp_dept_loc_vu B、CREATE PUBLIC SYNONYM EDL:VU FOR mary (emp_dept_loc_vu); C、CREATE PUBLIC SYNONYM EDL_VU FOR emp _dept_loc_vu; D、CREATE SYNONYM EDL_VU ON emp_dept_loc_vu FOR EACH USER; E、CREATE SYNONYM EDL_VU FOR EACH USER ON emp_dept_loc_vu F、CREATE PUBLIC SYNONYM EDL_VU ON emp_dept_loc_vu FOR ALL USERS;
A、CREATE PUBLIC SYNONYM EDL_VU ON emp_dept_loc_vu B、CREATE PUBLIC SYNONYM EDL:VU FOR mary (emp_dept_loc_vu); C、CREATE PUBLIC SYNONYM EDL_VU FOR emp _dept_loc_vu; D、CREATE SYNONYM EDL_VU ON emp_dept_loc_vu FOR EACH USER; E、CREATE SYNONYM EDL_VU FOR EACH USER ON emp_dept_loc_vu F、CREATE PUBLIC SYNONYM EDL_VU ON emp_dept_loc_vu FOR ALL USERS;
A、Synonyms can be created only for a table B、Synonyms are used to reference only those tables that are owned by another user C、A public synonym and a private synonym can exist with the same name for the same table D、The DROP SYNONYM statement removes the synonym, and the table on which the synonym has been created becomes invalid
A、A.CREATE PUBLIC SYNONYM cust ON mary.customer B、B.CREATE PUBLIC SYNONYM cust FOR mary.customer C、C.CREATE SYNONYM cust ON mary.customer FOR PUBLIC D、D.不能创建CUSTOMER的公用同义词
A、CREATE SYNONYM ord FOR orders; This command is issued by OE B、CREATE PUBLIC SYNONYM ord FOR orders; This command is issued by OE C、CREATE SYNONYM ord FOR oe.orders; This command is issued by the database administrator D、CREATE PUBLIC SYNONYM ord FOR oe.orders; This command is issued by the database administrator