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单选题
You need to perform certain data manipulation operations through a view called EMP_DEPT_VU, which you previously created. You want to look at the definition of the view (the SELECT statement on which the view was create.) How do you obtain the definition of the view?（）
A
Use the DESCRIBE command in the EMP_DEPT VU view.
B
Use the DEFINE VIEW command on the EMP_DEPT VU view.
C
Use the DESCRIBE VIEW command on the EMP_DEPT VU view.
D
Query the USER_VIEWS data dictionary view to search for the EMP_DEPT_VU view.
E
Query the USER_SOURCE data dictionary view to search for the EMP_DEPT_VU view.
F
Query the USER_OBJECTS data dictionary view to search for the EMP_DEPT_VU view.
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更多 “单选题You need to perform certain data manipulation operations through a view called EMP_DEPT_VU, which you previously created. You want to look at the definition of the view (the SELECT statement on which the view was create.) How do you obtain the definition of the view?（）A Use the DESCRIBE command in the EMP_DEPT VU view.B Use the DEFINE VIEW command on the EMP_DEPT VU view.C Use the DESCRIBE VIEW command on the EMP_DEPT VU view.D Query the USER_VIEWS data dictionary view to search for the EMP_DEPT_VU view.E Query the USER_SOURCE data dictionary view to search for the EMP_DEPT_VU view.F Query the USER_OBJECTS data dictionary view to search for the EMP_DEPT_VU view.” 相关考题
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You need to perform certain data manipulation operations through a view called EMP_DEPT_VU, which you previously created. You want to look at the definition of the view (the SELECT statement on which the view was create.) How do you obtain the definition of the view? （）A、Use the DESCRIBE command in the EMP_DEPT VU view.B、Use the DEFINE VIEW command on the EMP_DEPT VU view.C、Use the DESCRIBE VIEW command on the EMP_DEPT VU view.D、Query the USER_VIEWS data dictionary view to search for the EMP_DEPT_VU view.E、Query the USER_SOURCE data dictionary view to search for the EMP_DEPT_VU view.F、Query the USER_OBJECTS data dictionary view to search for the EMP_DEPT_VU view.
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You do not need to open the database with the RESETLOGS operationC
You do not need to perform a full backup after the RESETLOGS operation.D
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考题
单选题You added a PHONE_NUMBER column of NUMBER data type to an existing EMPLOYEES table. The EMPLOYEES table already contains records of 100 employees. Now, you want to enter the phone numbers of each of the 100 employees into the table. Some of the employees may not have a phone number available. Which data manipulation operation do you perform?（）A
MERGEB
INSERTC
UPDATED
ADDE
ENTERF
You cannot enter the phone numbers for the existing employee records.
考题
单选题You need to perform certain data manipulation operations through a view called EMP_DEPT_VU, which you previously created. You want to look at the definition of the view (the SELECT statement on which the view was created.) How do you obtain the definition of the view?（）A
Use the DESCRIBE command on the EMP_DEPT_VU view.B
Use the DEFINE VIEW command on the EMP_DEPT_VU view.C
Use the DESCRIBE VIEW command on the EMP_DEPT_VU view.D
Query the USER_VIEWS data dictionary view to search for the EMP_DEPT_VU view.E
Query the USER_SOURCE data dictionary view to search for the EMP_DEPT_VU view.F
Query the USER_OBJECTS data dictionary view to search for the EMP_DEPT_VU view.
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