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多选题
In a test database, you issue the SELECT … INTO OUTFILE statement to create a file with your t1 table data. You then TRUNCATE this table to empty it.（） Mysql＞ SELECT * INTO OUTFILE '/tmp/t1.sql' from t1; mysql＞ TRUNCATE t1;
A
$ mysqladmin – u root – p – h localhost test – restore /tmp/t1.sql
B
Mysql＞ INSERT INTO t1 VALUES FROM '/tmp/t1.sql'
C
$ mysql – u root – p – h localhost test ＜ /tmp/t1.sql
D
Mysql＞ LOAD DATA INFILE '/tmp/t1.sql' INTO TABLE t1
E
$ mysqlinport – u root – p – h localhost test /tmp/t1.sql
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更多 “多选题In a test database, you issue the SELECT … INTO OUTFILE statement to create a file with your t1 table data. You then TRUNCATE this table to empty it.（） Mysql＞ SELECT * INTO OUTFILE '/tmp/t1.sql' from t1; mysql＞ TRUNCATE t1;A$ mysqladmin – u root – p – h localhost test – restore /tmp/t1.sqlBMysql＞ INSERT INTO t1 VALUES FROM '/tmp/t1.sql'C$ mysql – u root – p – h localhost test ＜ /tmp/t1.sqlDMysql＞ LOAD DATA INFILE '/tmp/t1.sql' INTO TABLE t1E$ mysqlinport – u root – p – h localhost test /tmp/t1.sql” 相关考题
考题
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
考题
In a test database, you issue the SELECT … INTO OUTFILE statement to create a file with your t1 table data. You then TRUNCATE this table to empty it.（）Mysql＞ SELECT * INTO OUTFILE ‘/tmp/t1.sql‘ from t1;mysql＞ TRUNCATE t1;A.$ mysqladmin – u root – p – h localhost test – restore /tmp/t1.sqlB.Mysql＞ INSERT INTO t1 VALUES FROM ‘/tmp/t1.sql‘C.$ mysql – u root – p – h localhost test ＜ /tmp/t1.sqlD.Mysql＞ LOAD DATA INFILE ‘/tmp/t1.sql‘ INTO TABLE t1E.$ mysqlinport – u root – p – h localhost test /tmp/t1.sql
考题
From SQL*Plus, you issue this SELECT statement:You use this statement to retrieve data from a data table for()。
A. UpdatingB. ViewingC. DeletingD. InsertingE. Truncating
考题
You are the administrator of a SQL Server 2000 computer. You are creating a data transformation services package. As the first step in this process, you need to load data from text files into a database table. These text files contain data on new stores that join your franchise. The text files list the data columns in the following format StoreID, StoreName, Address, City, State, PostalCode, ManagerID, StoreTypeID, FacilityID.The destination table is configured as shown in the exhibit.You want to load the data into the table as quickly as possible. What should you do?A．Use a Bulk Insert Task to read the data into a temporary table. Use an Execute SQL task to import the appropriate data into the destination table.B．Create and edit a format file to select the columns you want to import. Use a Bulk Insert Task, and then specify the format file to import the appropriate data into the destination table.C．Use a transform. data task to import the data. Use Microsoft ActiveX transformation scripts to write the appropriate data to the appropriate columns in the destination table.D．Create and edit a format file to select the columns you want to import. Use a transform. data task, and then specify the format file to import the appropriate data into the destination table.
考题
You are the administrator of a SQL Server 2000 computer in your company's personnel department. Employee data is stored in a SQL Server 2000 database. A portion of the database schema is shown in the exhibit.You want to create a text file that lists these data columns in the following format title, FirstName, LastName, WorkPhone, PositionName, DepartmentName.You want to create the text file as quickly as possible. You do not expect to re-create this file, and you want to avoid creating new database objects if possible.What should you do?A．Use the bcp utility to export data from each table to a separate text file. Use format files to select the appropriate columns. Merge the data from each text file into a single text file.B．Create a view that joins data from all three tables include only the columns you want to appear in the text file. Use the bcp utility to export data from the view.C．Create a SELECT query that joins the data from the appropriate columns in the three tables. Add an INTO clause to the query to create a local temporary table. Use the bcp utility to export data from the local temporary table to a text file.D．Create a SELECT query that joins the data from the appropriate columns in the three tables. Add an INTO clause to the query to create a global temporary table. Use the bcp utility to export data from the global temporary table to a text file.
考题
Given that tables T1 and T2 contain the following rows:Table T1: C1 C2 1 4 1 3 1 2Table T2: C1 C2 1 1 1 2 1 3Which of the following queries will return only those rows that exist in both T1 and T2?()
A.SELECT * FROM t1 UNION SELECT * FROM t2B.SELECT * FROM t1 UNION DISTINCT SELECT * FROM t2C.SELECT * FROM t1 INTERSECT SELECT * FROM t2D.SELECT * FROM t1 WHERE (c1,c2)= (SELECT c1,c2 FROM t2)
考题
In a test database, you issue the SELECT … INTO OUTFILE statement to create a file with your t1 table data. You then TRUNCATE this table to empty it.（） Mysql＞ SELECT * INTO OUTFILE '/tmp/t1.sql' from t1; mysql＞ TRUNCATE t1;A、$ mysqladmin – u root – p – h localhost test – restore /tmp/t1.sqlB、Mysql＞ INSERT INTO t1 VALUES FROM '/tmp/t1.sql'C、$ mysql – u root – p – h localhost test ＜ /tmp/t1.sqlD、Mysql＞ LOAD DATA INFILE '/tmp/t1.sql' INTO TABLE t1E、$ mysqlinport – u root – p – h localhost test /tmp/t1.sql
考题
如下能正确执行的语句是（）A、select * from table_name where 1=2B、truncate table table_nameC、delete from table_name where null=nullD、alter table table_name add column idd int
考题
Given that tables T1 and T2 contain the following rows: Table T1: C1 C2 5 4 5 2 5 5 Table T2: C1 C2 5 1 5 2 5 3 Which of the following queries will return only those rows that exist in T1 and not in T2?（）A、SELECT * FROM T1 MINUS SELECT * FROM T2B、SELECT * FROM T1 EXCEPT SELECT * FROM T2C、SELECT * FROM T2 UNION EXCEPT SELECT * FROM T1D、SELECT * FROM T1 NOT EXISTS SELECT * FROM T2
考题
In your test database， you have created the ORDERS table as an index/x7forganized table （IOT）. To facilitate faster querying， you have created a mapping table and a bitmap index on the ORDER_FILLED column. You observe that the query performance degrades when users perform a large volume of transactions. While investigating the reason， you find that the mapping table segment is fragmented， leading to poor performance. Which option would you use to defragment the mapping table without affecting the original table data？（）A、export and import the mapping tableB、drop and recreate the mapping tableC、truncate the mapping table and reinsert the valuesD、use the ALTER TABLE .. REBUILD command to defragment the mapping table
考题
From SQL*Plus, you issue this SELECT statement: SELECT* FROM order; You use this statement to retrieve data from a data table for （）.A、UpdatingB、ViewingC、DeletingD、InsertingE、Truncating
考题
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
考题
Examine the following commands executed in your database： SQL ALTER SESSION RECYCLEBIN=ON； Session altered SQL CREATE TABLE emp TABLESPACE tbsfd AS SELECT * FROM hr.employees； Table created. Further， you executed the following command to drop the table： SQL DROP TABLE emp； Table dropped. What happens in this scenario？ （）A、The table is moved to the SYSAUX tablespace.B、The table is moved to the SYSTEM tablespace.C、The table is removed from the database permanently.D、The table is renamed and remains in the TBSFD tablespace.
考题
The database administrator of your company created a public synonym called HR for the HUMAN_RESOURCES table of the GENERAL schema, because many users frequently use this table. As a user of the database, you created a table called HR in your schema. What happens when you execute this query? SELECT * FROM HR;（）A、You obtain the results retrieved from the public synonym HR created by the database administrator.B、You obtain the results retrieved from the HR table that belongs to your schema.C、You get an error message because you cannot retrieve from a table that has the same name as a public synonym.D、You obtain the results retrieved from both the public synonym HR and the HR table that belongs to your schema, as a Cartesian product.E、You obtain the results retrieved from both the public synonym HR and the HR table that belongs to your schema, as a FULL JOIN.
考题
You have table 'apps','userdata' on server that uses MyISAM storage engine. You want to transfer this data to server but use InnoDB engine instead. You execute the following commands: ServerB commands: Shell＞ mysqldump –u root –h server –no-data apps userdata | mysql –u root –p apps Shell＞ mysql –u root –p –h server –e 'ALTER TABLE 'apps','userdata' ENGINE=InnoDB;' Shell＞ mysqldump –u root –p –h server –no-create-info –order-by-primary apps userdata | mysql –u root –p apps What effect does the – order-by-primary argument have on the mysqldump command?（）A、It exports tables with the most indexes first to assist with import speedsB、It ensures that unique indexes have no conflicts when the data is dumpedC、It orders by primary key to assist in speeding up importing to InnoDB tablesD、It must be specified so index data is dumped correctly when –on-create-info is used
考题
You plan to move data from a flat file to a table in your database. You decide to use SQL*Loader direct pathload method to perform this task. The table in which you plan to load data is an important table having variousintegrity constraints defined on it. Which constraints will remain enabled by default during this operation（）A、CHECKB、UNIQUEC、NOT NULLD、PRIMARY KEYE、FOREIGN KEY
考题
In your multitenant container database (CDB) containing pluggable database (PDBs), you granted theCREATE TABLE privilege to the common user C # # A_ADMIN in root and all PDBs. You execute thefollowing command from the root container:SQL REVOKE create table FROM C # # A_ADMIN;What is the result?（）A、It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in root only.B、It fails and reports an error because the CONTAINER=ALL clause is not used.C、It excludes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in root and all PDBs.D、It fails and reports an error because the CONTAINER=CURRENT clause is not used.E、It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in all PDBs.
考题
Examine the statement: Create synonym emp for hr. employees; What happens when you issue the statement? （）A、An error is generated.B、You will have two identical tables in the HR schema with different names.C、You create a table called employees in the HR schema based on you EMP table.D、You create an alternative name for the employees table in the HR schema in your own schema.
考题
修改MySQL用户root的密码的指令是（）。A、mysqladmin -u root password testB、mysql -u root password testC、mysql -u root -p testD、mysql -u root -password test
考题
单选题In your multitenant container database (CDB) containing pluggable database (PDBs), you granted theCREATE TABLE privilege to the common user C # # A_ADMIN in root and all PDBs. You execute thefollowing command from the root container:SQL REVOKE create table FROM C # # A_ADMIN;What is the result?（）A
It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in root only.B
It fails and reports an error because the CONTAINER=ALL clause is not used.C
It excludes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in root and all PDBs.D
It fails and reports an error because the CONTAINER=CURRENT clause is not used.E
It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in all PDBs.
考题
单选题Given that tables T1 and T2 contain the following rows: Table T1: C1 C2 1 4 1 3 1 2 Table T2: C1 C2 1 1 1 2 1 3 Which of the following queries will return only those rows that exist in both T1 and T2?（）A
SELECT * FROM t1 UNION SELECT * FROM t2B
SELECT * FROM t1 UNION DISTINCT SELECT * FROM t2C
SELECT * FROM t1 INTERSECT SELECT * FROM t2D
SELECT * FROM t1 WHERE (c1,c2)= (SELECT c1,c2 FROM t2)
考题
多选题In a test database, you issue the SELECT … INTO OUTFILE statement to create a file with your t1 table data. You then TRUNCATE this table to empty it.（） Mysql＞ SELECT * INTO OUTFILE '/tmp/t1.sql' from t1; mysql＞ TRUNCATE t1;A$ mysqladmin – u root – p – h localhost test – restore /tmp/t1.sqlBMysql＞ INSERT INTO t1 VALUES FROM '/tmp/t1.sql'C$ mysql – u root – p – h localhost test ＜ /tmp/t1.sqlDMysql＞ LOAD DATA INFILE '/tmp/t1.sql' INTO TABLE t1E$ mysqlinport – u root – p – h localhost test /tmp/t1.sql
考题
单选题In your test database， you have created the ORDERS table as an index-organized table （IOT）. To facilitate faster querying， you have created a mapping table and a bitmap index on the ORDER_FILLED column. You observe that the query performance degrees when users perform a large volume of transactions. While investigating the reason， you find that the mapping table segment is fragmented， leading to poor performance. Which option would you use to defragment the mapping table without affecting the original table data？（）A
Export and import the mapping table.B
Drop and re-create the mapping table.C
Truncate the mapping table and reinsert the values.D
Use the ALTER TABLE .. REBUILD command to defragment the mapping table.
考题
多选题From SQL*Plus, you issue this SELECT statement: SELECT* FROM order; You use this statement to retrieve data from a data table for （）.AUpdatingBViewingCDeletingDInsertingETruncating
考题
多选题You want to shutdown a running Mysql Server cleanly. Which three commands that are valid on either Windows or Linux will achieve this?（）AShell＞ mysqladmin –u root –p shutdownBShell＞ nmc mysql shutdownCMysql＞ STOP PROCESS mysqldDShell＞ /etc/init.d/mysql stopEShell＞ service mysql safe_exitFShell＞ pkill –u mysql mysqld_safeGShell＞ net stop mysql
考题
多选题You plan to move data from a flat file to a table in your database. You decide to use SQL*Loader direct pathload method to perform this task. The table in which you plan to load data is an important table having variousintegrity constraints defined on it. Which constraints will remain enabled by default during this operation（）ACHECKBUNIQUECNOT NULLDPRIMARY KEYEFOREIGN KEY
考题
单选题Given that tables T1 and T2 contain the following rows: Table T1: C1 C2 5 4 5 2 5 5 Table T2: C1 C2 5 1 5 2 5 3 Which of the following queries will return only those rows that exist in T1 and not in T2?（）A
SELECT * FROM T1 MINUS SELECT * FROM T2B
SELECT * FROM T1 EXCEPT SELECT * FROM T2C
SELECT * FROM T2 UNION EXCEPT SELECT * FROM T1D
SELECT * FROM T1 NOT EXISTS SELECT * FROM T2
考题
单选题Given that tables T1 and T2 contain the following rows: Table T1: C1 C2 1 4 1 3 1 2 Table T2: C1 C2 1 1 1 2 1 3 Which of the following queries will return only those rows that exist in both T1 and T2?（）A
SELECT * FROM t1 UNION SELECT * FROM t2B
SELECT * FROM t1 UNION DISTINCT SELECT * FROM t2C
SELECT * FROM t1 INTERSECT SELECT * FROM t2D
SELECT * FROM t1 WHERE (c1,c2)= (SELECT c1,c2 FROM t2)
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