What does the TRUNCATE statement do?（）A、Removes the tableB、Removes all rows from a tableC、Shortens the table to 10 rowsD、Removes all columns from a tableE、Removes foreign keys from a table
What does the TRUNCATE statement do?（）
- A、Removes the table
- B、Removes all rows from a table
- C、Shortens the table to 10 rows
- D、Removes all columns from a table
- E、Removes foreign keys from a table
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The EMPLOYEES table contains these columns:You need to write a query that will produce these results:1. Display the salary multiplied by the commission_pct.2. Exclude employees with a zero commission_pct.3. Display a zero for employees with a null commission value.Evaluate the SQL statement:What does the statement provide?（）A. All of the desired resultsB. Two of the desired resultsC. One of the desired resultsD. An error statement
Exhibit:Examine the data in the EMPLOYEES table.Examine the subquery:SELECT last_nameFROM employeesWHERE salary IN (SELECT MAX(salary)FROM employeesGROUP BY department_id);Which statement is true?() A. The SELECT statement is syntactically accurate.B. The SELECT statement does not work because there is no HAVING clause.C. The SELECT statement does not work because the column specified in the GROUP BY clause is not in the SELECT list.D. The SELECT statement does not work because the GROUP BY clause should be in the main query and not in the subquery.
What is the result of executing a TRUNCATE TABLE command on a table that has Flashback Archivingenabled?() A. It fails with the ORA-665610 Invalid DDL statement on history-tracked messageB. The rows in the table are truncated without being archived.C. The rows in the table are archived, and then truncated.D. The rows in both the table and the archive are truncated.
Evaluate the set of SQL statements:What is true about the set?() A. The DESCRIBE DEPT statement displays the structure of the DEPT table.B. The ROLLBACK statement frees the storage space occupies by the DEPT table.C. The DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.D. The DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.
Click the Exhibit button and examine the data in the EMPLOYEES table.Examine the subquery:SELECT last_nameFROM employeesWHERE salary IN (SELECT MAX(salary)FROM employeesGROUP BY department_id);Which statement is true?（）A.The SELECT statement is syntactically accurate.B.The SELECT statement does not work because there is no HAVING clause.C.The SELECT statement does not work because the column specified in the GROUP BY clause is not in the SELECT list.D.The SELECT statement does not work because the GROUP BY clause should be in the main query and not in the subquery.
Which of the following may illustrate the difference between "competence" and__________ "performance"?A．What a person "knows" and what he/she "does".B．What a person "can do" and what he/she "does".C．What a person "does" and what he/she "knows".D．What a person "does" and what he/she "can do".
I just wonder( )that makes him so excited. A.why it does B.what he does C.how it is D.what it is
After applying the policy-rematch statement under the security policies stanza, what would happen to an existing flow if the policy source address or the destination address is changed and committed?（）A、The Junos OS drops any flow that does not match the source address or destination address.B、All traffic is dropped.C、All existing sessions continue.D、The Junos OS does a policy re-evaluation.
You issue this statement：ALTER DATABASE BACKUP CONTROLFILE TO TRACE； What does the statement generate？（）A、A text copy of the control file.B、A binary copy of the control file.C、A file containing a SQL statement which will re-create the database.D、A file containing a SQL statement which will re-create the control file.
When does a transaction complete?（）A、when a DELETE statement is executed B、when a ROLLBACK command is executed C、when a PL/SQL anonymous block is executed D、when a data definition language (DDL) statement is executed E、when a TRUNCATE statement is executed after the pending transact ion
“吃水”这个词用英语怎么说？（）A、What does “chi shui” mean in English?B、What does “chi shui” stand for?C、What’s “chi shui” in English?
Which two statements are true about terms in a routing policy?（）A、A routing policy cannot have more than one term.B、If a term does not contain a from statement, all routes match.C、If a term does not contain a from statement, the Junos OS will not commit.D、A then statement is not mandatory in a term.
Which two statements are true about terms in a routing policy?（）A、A then statement is mandatory in a termB、If a term does not contain a from statement, all routers matchC、If a term does not contain a from statement, the Junos OS will not commitD、A then statement is not mandatory in a term
What is the result of executing a TRUNCATE TABLE command on a table that has Flashback Archivingenabled?（）A、It fails with the ORA-665610 Invalid DDL statement on history-tracked messageB、The rows in the table are truncated without being archived.C、The rows in the table are archived, and then truncated.D、The rows in both the table and the archive are truncated.
Evaluate the SQL statement:TRUNCATE TABLE DEPT;Which three are true about the SQL statement? （）A、It releases the storage space used by the table.B、It does not release the storage space used by the table.C、You can roll back the deletion of rows after the statement executes.D、You can NOT roll back the deletion of rows after the statement executes.E、An attempt to use DESCRIBE on the DEPT table after the TRUNCATE statement executes will display an error.F、You must be the owner of the table or have DELETE ANY TABLE system privileges to truncate the DEPT table
单选题What does the author mean by the statement “children’s literature began to bloom” underlined in Paragraph 2?AQuality illustrations and attractive formats made books more appealing.BIllustrations often included flowers.CIt became more varied and attractive.DIt became more numerous and popular.
多选题Evaluate the SQL statement: TRUNCATE TABLE DEPT;Which three are true about the SQL statement? （）AIt releases the storage space used by the table.BIt does not release the storage space used by the table.CYou can roll back the deletion of rows after the statement executes.DYou can NOT roll back the deletion of rows after the statement executes.EAn attempt to use DESCRIBE on the DEPT table after the TRUNCATE statement executes will display an error.FYou must be the owner of the table or have DELETE ANY TABLE system privileges to truncate the DEPT table.
多选题When does a transaction complete?（）Awhen a DELETE statement is executedBwhen a ROLLBACK command is executedCwhen a PL/SQL anonymous block is executedDwhen a data definition language (DDL) statement is executedEwhen a TRUNCATE statement is executed after the pending transact ion
多选题Which two statements are true about terms in a routing policy?（）AA then statement is mandatory in a termBIf a term does not contain a from statement, all routers matchCIf a term does not contain a from statement, the Junos OS will not commitDA then statement is not mandatory in a term
单选题What is the result of executing a TRUNCATE TABLE command on a table that has Flashback Archivingenabled?（）AIt fails with the ORA-665610 Invalid DDL statement on history-tracked messageBThe rows in the table are truncated without being archived.CThe rows in the table are archived, and then truncated.DThe rows in both the table and the archive are truncated.
单选题After applying the policy-rematch statement under the security policies stanza, what would happen to an existing flow if the policy source address or the destination address is changed and committed?（）AThe Junos OS drops any flow that does not match the source address or destination address.BAll traffic is dropped.CAll existing sessions continue.DThe Junos OS does a policy re-evaluation.
单选题What does the TRUNCATE statement do?（）ARemoves the tableBRemoves all rows from a tableCShortens the table to 10 rowsDRemoves all columns from a tableERemoves foreign keys from a table
多选题Which two statements are true about terms in a routing policy?（）AA routing policy cannot have more than one term.BIf a term does not contain a from statement, all routes match.CIf a term does not contain a from statement, the Junos OS will not commit.DA then statement is not mandatory in a term.
单选题You issue this statement：ALTER DATABASE BACKUP CONTROLFILE TO TRACE； What does the statement generate？（）AA text copy of the control file.BA binary copy of the control file.CA file containing a SQL statement which will re-create the database.DA file containing a SQL statement which will re-create the control file.
问答题Some believe that people should never be satisfied with what they have and should always strive for something new and different, but there are also people who believe that those who constantly feel satisfied tend to be happy. What is your opinion? Write a composition of about 400 words on the following topic:Does satisfaction bring happiness? In the first part of your writing you should present your thesis statement, and in the second part you should support the thesis statement with appropriate details. In the last part you should bring what you have written to a natural conclusion or a summary. Marks will be awarded for content, organization, grammar and appropriateness. Failure to follow the above instructions may result in a loss of marks.