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At 5：30 PM， a database administrator， William， is informed that an important record of employee no E0025 is missing from the SCOTT.EMPLOYEE table. At 4：30 P.M， the table contained the record of employee no E0025. William issues the following command to find the SQL statements that are used to undo the deletion： SELECT operation， undo_sql， logon_user FROM FLASHBACK_TRANSACTION_QUERY WHERE xid= HEXTORAW（’0100043E23456’）； where ’0100043E23456’ is the transaction ID of the transaction that deleted the row. Before issuing the above statement， which task did William perform to identify the transaction ID of the transaction that deleted the row？（）
- A、 William used the Flashback Version Query feature.
- B、 William issued the CROSSCHECK command at the RMAN prompt.
- C、 William viewed the alert log file.
- D、 William used the Flashback Table feature.
参考答案
更多 “ At 5：30 PM， a database administrator， William， is informed that an important record of employee no E0025 is missing from the SCOTT.EMPLOYEE table. At 4：30 P.M， the table contained the record of employee no E0025. William issues the following command to find the SQL statements that are used to undo the deletion： SELECT operation， undo_sql， logon_user FROM FLASHBACK_TRANSACTION_QUERY WHERE xid= HEXTORAW（’0100043E23456’）； where ’0100043E23456’ is the transaction ID of the transaction that deleted the row. Before issuing the above statement， which task did William perform to identify the transaction ID of the transaction that deleted the row？（）A、 William used the Flashback Version Query feature.B、 William issued the CROSSCHECK command at the RMAN prompt.C、 William viewed the alert log file.D、 William used the Flashback Table feature.” 相关考题
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Examine the data in the EMPLOYEES and DEPARTMENTS tables: EMPLOYEES EMP_NAME DEPT_ID MGR_ID JOB_ID SALARY EMPLOYEE_ID 101 Smith 20 120 SA_REP 4000 102 Martin 10 105 CLERK 2500 103 Chris 20 120 IT_ADMIN 4200 104 John 30 108 HR_CLERK 2500 105 Diana 30 108 IT_ADMIN 5000 106 Smith 40 110 AD_ASST 3000 108 Jennifer 30 110 HR_DIR 6500 110 Bob 40 EX_DIR 8000 120 Ravi 20 110 SA*DIR 6500 DEPARTMENTS DEPARTMENT_ID DEPARTMENT_NAME 10 Admin 20 Education 30 IT 40 Human Resources Also examine the SQL statements that create the EMPLOYEES and DEPARTMENTS tables: CREATE TABLE departments (department_id NUMBER PRIMARY KEY, department _ name VARCHAR2(30)); CREATE TABLE employees (EMPLOYEE_ID NUMBER PRIMARY KEY, EMP_NAME VARCHAR2(20), DEPT_ID NUMBER REFERENCES departments(department_id), MGR_ID NUMBER REFERENCES employees(employee id), MGR_ID NUMBER REFERENCES employees(employee id), JOB_ID VARCHAR2(15). SALARY NUMBER); ON the EMPLOYEES, On the EMPLOYEES table, EMPLOYEE_ID is the primary key. MGR_ID is the ID of managers and refers to the EMPLOYEE_ID. DEPT_ID is foreign key to DEPARTMENT_ID column of the DEPARTMENTS table. On the DEPARTMENTS table, DEPARTMENT_ID is the primary key. Examine this DELETE statement: DELETE FROM departments WHERE department id = 40; What happens when you execute the DELETE statement?（）A、Only the row with department ID 40 is deleted in the DEPARTMENTS table.B、The statement fails because there are child records in the EMPLOYEES table with department ID 40.C、The row with department ID 40 is deleted in the DEPARTMENTS table. Also the rows with employee IDs 110 and 106 are deleted from the EMPLOYEES table.D、The row with department ID 40 is deleted in the DEPARTMENTS table. Also the rows with employee IDs 106 and 110 and the employees working under employee 110 are deleted from the EMPLOYEES table.E、The row with department ID 40 is deleted in the DEPARTMENTS table. Also all the rows in the EMPLOYEES table are deleted.F、The statement fails because there are no columns specifies in the DELETE clause of the DELETE statement.
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You execute the following command toauditdatabase activities： SQLAUDITDROP ANY TABLE BY scott BY SESSION WHENEVER SUCCESSFUL； What is the effect of this command（）A、Oneauditrecord is created for every successful DROP TABLE command executed in the session ofSCOTT.B、Oneauditrecord is generated for the session when SCOTT grants the DROP ANY TABLE privilege toother users.C、One audit record is created for the whole session if user SCOTT successfully drops one or more tablesin his session.D、One audit record is created for every session of any other user in which a table owned by SCOTT isdropped successfully.E、One audit record is created for every successful DROP TABLE command executed by any user to droptables owned by SCOTT.
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Your company uses a SQL Server 2005 database. Customer data from your trading partners is imported into the Customers table every night. You need to ensure that the customer record is updated if it already exists in the Customers table. If the record does not exist, the data needs to be inserted into the Customers table. What should you do?（）A、 Create a FOR trigger. B、 Create an INSTEAD OF trigger. C、 Create an AFTER trigger. D、 Create a DDL trigger.
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单选题Examine the data in the EMPLOYEES and DEPARTMENTS tables: EMPLOYEES EMP_NAME DEPT_ID MGR_ID JOB_ID SALARY EMPLOYEE_ID 101 Smith 20 120 SA_REP 4000 102 Martin 10 105 CLERK 2500 103 Chris 20 120 IT_ADMIN 4200 104 John 30 108 HR_CLERK 2500 105 Diana 30 108 IT_ADMIN 5000 106 Smith 40 110 AD_ASST 3000 108 Jennifer 30 110 HR_DIR 6500 110 Bob 40 EX_DIR 8000 120 Ravi 20 110 SA*DIR 6500 DEPARTMENTS DEPARTMENT_ID DEPARTMENT_NAME 10 Admin 20 Education 30 IT 40 Human Resources Also examine the SQL statements that create the EMPLOYEES and DEPARTMENTS tables: CREATE TABLE departments (department_id NUMBER PRIMARY KEY, department _ name VARCHAR2(30)); CREATE TABLE employees (EMPLOYEE_ID NUMBER PRIMARY KEY, EMP_NAME VARCHAR2(20), DEPT_ID NUMBER REFERENCES departments(department_id), MGR_ID NUMBER REFERENCES employees(employee id), MGR_ID NUMBER REFERENCES employees(employee id), JOB_ID VARCHAR2(15). SALARY NUMBER); ON the EMPLOYEES, On the EMPLOYEES table, EMPLOYEE_ID is the primary key. MGR_ID is the ID of managers and refers to the EMPLOYEE_ID. DEPT_ID is foreign key to DEPARTMENT_ID column of the DEPARTMENTS table. On the DEPARTMENTS table, DEPARTMENT_ID is the primary key. Examine this DELETE statement: DELETE FROM departments WHERE department id = 40; What happens when you execute the DELETE statement?（）A
Only the row with department ID 40 is deleted in the DEPARTMENTS table.B
The statement fails because there are child records in the EMPLOYEES table with department ID 40.C
The row with department ID 40 is deleted in the DEPARTMENTS table. Also the rows with employee IDs 110 and 106 are deleted from the EMPLOYEES table.D
The row with department ID 40 is deleted in the DEPARTMENTS table. Also the rows with employee IDs 106 and 110 and the employees working under employee 110 are deleted from the EMPLOYEES table.E
The row with department ID 40 is deleted in the DEPARTMENTS table. Also all the rows in the EMPLOYEES table are deleted.F
The statement fails because there are no columns specifies in the DELETE clause of the DELETE statement.
考题
单选题You are employed as a DBA in an organization. You are informed that the record of EMP_NO 1000 is missing from the SCOTT.EMP table. You are required to identify the user who deleted the record， the SQL statement that will undo the deletion， and the transaction ID of the transaction that deleted the employee record. Which feature will you use to perform the tasks？（）A
Only the Flashback TableB
Both the Flashback Transaction Query and the Flashback Version QueryC
Only the Flashback DropD
Only the Flashback Version
考题
多选题On Jan 11， 2005 at 2：30 P.M.， an erroneous update operation modified all the values of column LASTNAME in the EMPLOYEE table in the Scott schema to an empty string. You are the system administrator， and you want to return the original values in the table. To do so， you decided to flash back the table. Which two options can you use to flash back a table？（）Aby using Oracle Enterprise ManagerBby issuing the FLASHBACK TABLE statement at the RMAN promptCby issuing the FLASHBACK TABLE statement at the SQL promptDby issuing the FLASHBACK TABLE statement at the LSNRCTL prompt
考题
单选题Your company uses a SQL Server 2005 database. Customer data from your trading partners is imported into the Customers table every night. You need to ensure that the customer record is updated if it already exists in the Customers table. If the record does not exist, the data needs to be inserted into the Customers table. What should you do?（）A
Create a FOR trigger. B
Create an INSTEAD OF trigger. C
Create an AFTER trigger. D
Create a DDL trigger.
考题
单选题At 5：30 PM， a database administrator， William， is informed that an important record of employee no E0025 is missing from the SCOTT.EMPLOYEE table. At 4：30 P.M， the table contained the record of employee no E0025. William issues the following command to find the SQL statements that are used to undo the deletion： SELECT operation， undo_sql， logon_user FROM FLASHBACK_TRANSACTION_QUERY WHERE xid= HEXTORAW（’0100043E23456’）； where ’0100043E23456’ is the transaction ID of the transaction that deleted the row. Before issuing the above statement， which task did William perform to identify the transaction ID of the transaction that deleted the row？（）A
William used the Flashback Version Query feature.B
William issued the CROSSCHECK command at the RMAN prompt.C
William viewed the alert log file.D
William used the Flashback Table feature.
考题
单选题You are maintaining your database in ARCHIVELOG mode. An important table， SCOTT.EMPLOYEE， is dropped and purged from the Recycle Bin on Monday at 2：00 P.M. You do not use RMAN to perform backups. You performed the last full user-managed backup at 9：00 P.M. on Sunday. How will you recover the dropped table， SCOTT.EMPLOYEE？（）A
by using the Flashback Table featureB
by using the Flashback Database featureC
by performing incomplete recovery using RMAN utilityD
by performing incomplete recovery using user-managed recovery
考题
单选题You create a tabular employee report and are concerned about readability because the employee records are very close together. What is the best way to increase the amount of white space between the records?（）A
In the layout model increase the size of the employee record fields. B
In the report wizard increase the display width values of the employee record fields. C
In the property palette increase the size of the repeating frame surrounding the employee records. D
In the life previewer, high light a field, click on the parent frame icon and make the frame bigger verticall.
考题
单选题Given the following table definitions: EMPLOYEE ID NAME DEPTID 01Smith 10 02Bossy 20 03 20 Peterson 04Goss 30 05Pape 40 06Avery 50 07O'Neal 60 08Carter 50 DEPARTMENT ID DEPTNAME 05 Hardware 10 Kitchen 20 Shoes 30 Toys 40 Electronics 50 Automotive and the following query: SELECT e.id, d.deptname FROM employee e, department d WHERE e.deptid = d.id AND e.id 4 Which of the following queries will produce the same result set as the query above?（）A
SELECT e.id, d.deptname FROM employee e, department d WHERE e.id 4B
SELECT e.id, d.deptname FROM employee e INNER JOIN department d ON e.deptid = d.id WHERE e.id 4C
SELECT e.id, d.deptname FROM employee e FULL OUTER JOIN department d ON e.id = d.id WHERE e.id 4D
SELECT e.id, d.deptname FROM employee e LEFT OUTER JOIN department d ON e.deptid = d.id WHERE e.id 4 UNION ALL SELECT e.id, d.deptname FROM employee e RIGHT OUTER JOIN department d ON e.deptid = d.id WHERE e.id 4
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