he data blocks in your form module are based on object tables. How would you create a master-detail relationship between two of these blocks?（）A、Use the Data Block Wizard and base the relation on a REF pointer. B、In the Object Navigator, select the Relation node under the master block and click the Create icon. Build the relation manually and coordinate the blocks using triggers.C、Use the Data Block Wizard, and base the relation on the primary key-foreign key relationship in the database. D、This task is not possible because master-detail relations can be implemented only for blocks based on relational tables.
he data blocks in your form module are based on object tables. How would you create a master-detail relationship between two of these blocks?（）
- A、Use the Data Block Wizard and base the relation on a REF pointer.
- B、In the Object Navigator, select the Relation node under the master block and click the Create icon. Build the relation manually and coordinate the blocks using triggers.
- C、Use the Data Block Wizard, and base the relation on the primary key-foreign key relationship in the database.
- D、This task is not possible because master-detail relations can be implemented only for blocks based on relational tables.
相关考题：
The DB_BLOCK_CHECKING initialization parameter is set to OFF.Which block checking would be performed?() A. The Oracle database will perform block checking for the index blocks onlyB. The Oracle database will not perform block checking for any of the data blocksC. The Oracle database will perform block checking for the default permanent tablespace onlyD. The Oracle database will perform block checking for the data blocks in all user tablespacesE. The Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only
The DB_BLOCK_CHECKING initialization parameter is set to FALSE. What level of block checking would be performed？（）A、 The Oracle database will not perform block checking for any of the data blocks.B、 The Oracle database will perform block checking for the default permanent tablespace only. C、 The Oracle database will perform block checking for the data blocks in all user tablespaces.D、 The Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only.E、 The Oracle database will perform block checking for the data blocks in the SYSTEM and SYSAUX tablespaces.
You work as a database administrator for Supportcenter.cn. You are using Recovery Manager （RMAN） to perform backups in your databases. Which four backup operations can be performed using RMAN？（）A、A backup of the target database when it is mountedB、A backup of online redo log files when the database is openC、A backup of only used data blocks in the file beingbeingbackup upD、A backup of online， read/write data files when the database is openE、A backup of only those data blocks that have changed since a previous backupF、A backup of online， read/write data files when the database is in the NOMOUNT state.
The DB_BLOCK_CHECKING initialization parameter is set to OFF. 数据库块检测初始化参数被设定为关 Which block checking would be performed?（）A、The Oracle database will perform block checking for the index blocks only B、The Oracle database will not perform block checking for any of the data blocks C、The Oracle database will perform block checking for the default permanent tablespace only D、The Oracle database will perform block checking for the data blocks in all user tablespaces E、The Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only Oracle
According to your backup strategy， you performed an incremental level 0 backup of yourdatabase. Which statement regarding this backup is true？（）A、The backup is similar to image copy.B、The backup contains all used data blocks.C、The backup contains only unused data blocks.D、The backup contains all data blocks changed since the last incremental level 1 backup.
You executed the following command to create a tablespace called SALES_DATA： SQL CREATE TABLESPACE sales_data DATAFILE SIZE 100M SEGMENT SPACE MANAGEMENT AUTO； Which two statements are true about the SALES_DATA tablespace（）A、The database automatically determines the extent-sizing policy for the tablespace.B、The segments are automatically shrunk when the contents are removed from them.C、The allocation of extents within the tablespace is managed through the dictionary tables.D、The space utilization description of the data blocks in segments is recorded in bitmap blocks.E、The space utilization description of the data blocks in segments is managed through free lists.
You executed the following command to create a tablespace called SALES_DATA： CREATE TABLESPACE sales_data DATAFILE SIZE 100M SEGMENT SPACE MANAGEMENT AUTO； Which two statements are true about the SALES_DATA tablespace （）A、The database automatically determines the extent-sizing policy for the tablespace.B、The segments are automatically shrunk when the contents are removed from them.C、The allocation of extents within the tablespace is managed through the dictionary tables.D、The space utilization description of the data blocks in segments is recorded inbitmapblocks.E、The space utilization description of the data blocks in segments is managed through free lists.MANUAL
You are maintaining the PROD database of TeleSoft Corporation. You have initialized the following DB_BLOCK_CHECKING parameter in the init.ora file： DB_BLOCK_CHECKING = TRUE； What will be the result of setting this parameter？（）A、 Only data blocks of the SYSTEM tablespace will be checked.B、 Only data blocks of the SYSAUX tablespace will be checked.C、 A checksum will occur only on the checkpoint.D、 A checksum will occur every time a block is modified.
You want to check all the data blocks being written to the datafiles by analyzing the data on each block every time the DBWn process writes. Which action will you perform to check the data blocks？（）A、 Set the value of the DB_BLOCK_CHECKING initialization parameter to TRUEB、 Use the ANALYZE utility.C、 Use the DBVERIFY utility.D、 Use the DBMS_REPAIR package.
The DB_BLOCK_CHECKINGinitialization parameter is set to TRUE. What would be the result of this setting on the data blocks being written to the datafiles， every time the DBWn writes？（）A、 The Oracle database will check all data blocks by going through the data on each block， making sure the data is self-consistent.B、 The DBWn and the direct loader will calculate a checksum and store it in the cache header of every data block when writing it to disk.C、 The Oracle database will check data blocks belonging to the SYSTEM tablespace only， by going through the data on each block， making sure the data is self-consistent.D、 The Oracle database will check data blocks belonging to the SYSAUX tablespace only， by going through the data on each block， making sure the data is self-consistent.E、 The Oracle database will check data blocks in the SYSTEM and SYSAUX tablespaces only， by going through the data on each block， making sure the data is self-consistent.
单选题The accounting manager wants you to create a form that when queried will display a calculated total of year-to-date actual expenditures for the fund code entered. The value needed to generate this summary data are stored in multiple tables. How would you define the data source for this data block without having the DBA create a database object? （）AChoose Tools - Data Block Wizard, select View as the data source type, and base the block on the columns from the bales. BChoose Tools - Data Block Wizard, select Table as the data source type, and base the block on the columns from the tables. CSelect the Data Blocks node in the Object Navigator and click the Create button. Choose to build the data block manually and alter the Query Data Source Columns and Query Data Source Arguments properties to enter the SELECT statement. DSelect the Data Blocks node in the Object Navigator and click the Create button. Choose to build the data block manually, alter the Query Data Source Type property to 'Table', and enter the SELECT statement in the Query Data Source Name property. EChoose Tools - Data Block Wizard, select Stored Procedure as the data source type, and base the block on the columns the tables. FSelect the Data Blocks node in the Object Navigator and click the Create button. Choose to build the data block manually. Alter the Query Data Source Type to 'FROM' clause query', and enter the SELECT statement in the Query Data Source Name property.
单选题The DB_BLOCK_CHECKING initialization parameter is set to OFF. 数据库块检测初始化参数被设定为关 Which block checking would be performed?（）AThe Oracle database will perform block checking for the index blocks only BThe Oracle database will not perform block checking for any of the data blocks CThe Oracle database will perform block checking for the default permanent tablespace only DThe Oracle database will perform block checking for the data blocks in all user tablespaces EThe Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only Oracle
多选题You work as a database administrator for Certkiller .com. You are using Recovery Manager （RMAN） to perform backups in your databases. Which four backup operations can be performed using RMAN？（）AA backup of the target database when it is mountedBA backup of online redo log files when the database is openCA backup of only used data blocks in the file beingbeingbackup upDA backup of online， read/write data files when the database is openEA backup of only those data blocks that have changed since a previous backupFA backup of online， read/write data files when the database is in the NOMOUNT state.
单选题According to your backup strategy， you performed an incremental level 0 backup of your database. Which statement regarding this backup is true？（）AThe backup is similar to image copy.BThe backup contains all used data blocks.CThe backup contains only unused data blocks.DThe backup contains all data blocks changed since the last incremental level 1 backup.
单选题Matthew has recently joined NetFx Corporation as a junior-level Database Administrator （DBA）. He is asked by his supervisor to verify the database for data block corruptions. He uses the DBVERIFY utility and finds that two data blocks are corrupted in the database. What should Matthew use to identify the corrupted blocks as well as datafiles containing these blocks？（）A datafileB alert logC dynamic viewsD control file script
单选题he data blocks in your form module are based on object tables. How would you create a master-detail relationship between two of these blocks?（）AUse the Data Block Wizard and base the relation on a REF pointer. BIn the Object Navigator, select the Relation node under the master block and click the Create icon. Build the relation manually and coordinate the blocks using triggers.CUse the Data Block Wizard, and base the relation on the primary key-foreign key relationship in the database. DThis task is not possible because master-detail relations can be implemented only for blocks based on relational tables.
单选题You are creating the SAL_INFO data block on the EMP_QUERY form. The SALARY field should only be populated if the logged-on user is a manager. Since this query could potentially return a large amount of records, you have created a stored procedure which uses a ref cursor on which to base the data block. How would you create the data block?（）AClick the Data Blocks node in the Object Navigator and click the create button. Choose to build the data block manually. Enter the procedure name in the Query Data Source Columns property and the procedure code in the Query Data Source Arguments property. BChoose Tools - Data Block Wizard, select Table as the data source type, and base the data block on the columns included in the procedure. CSelect the Data Blocks node in the Object Navigator and click the Create button. Choose to build the data block manually, alter the Query Data Source Type property to 'Ref cursor', and enter the name of the procedure in the Query Data Source Name property. DSelect the Data Blocks node in the Object Navigator and click the Create button. Alter the Query Data Source Name, Query Data Source Columns, and Query Data Source Arguments properties to create a stored procedure that uses a ref cursor. ELaunch the Data Block Wizard, select Stored Procedures as the data source type, and base the block on the procedure.
多选题You executed the following command to create a tablespace called SALES_DATA： CREATE TABLESPACE sales_data DATAFILE SIZE 100M SEGMENT SPACE MANAGEMENT AUTO； Which two statements are true about the SALES_DATA tablespace （）AThe database automatically determines the extent-sizing policy for the tablespace.BThe segments are automatically shrunk when the contents are removed from them.CThe allocation of extents within the tablespace is managed through the dictionary tables.DThe space utilization description of the data blocks in segments is recorded inbitmapblocks.EThe space utilization description of the data blocks in segments is managed through free lists.MANUAL
多选题You executed the following command to create a tablespace called SALES_DATA： SQL CREATE TABLESPACE sales_data DATAFILE SIZE 100M SEGMENT SPACE MANAGEMENT AUTO； Which two statements are true about the SALES_DATA tablespace（）AThe database automatically determines the extent-sizing policy for the tablespace.BThe segments are automatically shrunk when the contents are removed from them.CThe allocation of extents within the tablespace is managed through the dictionary tables.DThe space utilization description of the data blocks in segments is recorded in bitmap blocks.EThe space utilization description of the data blocks in segments is managed through free lists.
单选题You want to implement a master-detail relation between data blocks based on object tables. How would you do this? （）ACreate the relation manually and coordinate the blocks using triggers. BBase the relation on a REF pointer using the Data Block Wizard. CBase the relation on a foreign key using the Data Block Wizard. DThis task is not possible because master-detail relations can be implemented only for blocks based on relation tables.
单选题Users complain SQL statements using a particular index fail. Using DBVERIFY， you find that two separate blocks in the index have become corrupt. The database data files for user data and index are very large. What is the least disruptive recover strategy available in Oracle9i？（）ARebuild the index using the online option. BTake the individual data file offline (not the whole tablespace), restore and recover the data file from backup with RMAN, then set the data file online again. CWithout setting the individual data file offline, use RMAN with Block Media Recovery to restore and recover only those blocks. DTake the individual data file (not the whole tablespace) offline, use RMAN with Block Media Recovery to restore and recover only those blocks, then set the data file online again.
多选题Your boss at Certkiller .com wants you to clarify Oracle 10g. Which two steps are performed the first time any UPDATE statement is issued after the instance is started？（）ACreating the parse tree of the statementBWriting the modified data blocks to the data filesCWriting the modified data to the archived redo log filesDUpdating the control file to indicate the most recent checkpointEUpdating the data file header to indicate the most recent checkpointFReading the blocks to database buffer cache if they are not already there
单选题The DB_BLOCK_CHECKINGinitialization parameter is set to TRUE. What would be the result of this setting on the data blocks being written to the datafiles， every time the DBWn writes？（）A The Oracle database will check all data blocks by going through the data on each block， making sure the data is self-consistent.B The DBWn and the direct loader will calculate a checksum and store it in the cache header of every data block when writing it to disk.C The Oracle database will check data blocks belonging to the SYSTEM tablespace only， by going through the data on each block， making sure the data is self-consistent.D The Oracle database will check data blocks belonging to the SYSAUX tablespace only， by going through the data on each block， making sure the data is self-consistent.E The Oracle database will check data blocks in the SYSTEM and SYSAUX tablespaces only， by going through the data on each block， making sure the data is self-consistent.
单选题You want to check all the data blocks being written to the datafiles by analyzing the data on each block every time the DBWn process writes. Which action will you perform to check the data blocks？（）A Set the value of the DB_BLOCK_CHECKING initialization parameter to TRUEB Use the ANALYZE utility.C Use the DBVERIFY utility.D Use the DBMS_REPAIR package.
单选题The DB_BLOCK_CHECKING initialization parameter is set to FALSE. What level of block checking would be performed？（）A The Oracle database will not perform block checking for any of the data blocks.B The Oracle database will perform block checking for the default permanent tablespace only. C The Oracle database will perform block checking for the data blocks in all user tablespaces.D The Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only.E The Oracle database will perform block checking for the data blocks in the SYSTEM and SYSAUX tablespaces.