多选题What are three uses for record groups?（）ATo pass data to a pop-up menu.BTo populate a base table block.CTo pass data to other form modules.DTo pass data to other Oracle products.ETo dynamically construct SELECT statements.FTo server as the source for a

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多选题

What are three uses for record groups?（）

To pass data to a pop-up menu.

To populate a base table block.

To pass data to other form modules.

To pass data to other Oracle products.

To dynamically construct SELECT statements.

To server as the source for a FROM clause query.

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相似问题和答案

第1题：

The corporate head office of TestKing has a teleconferencing system that uses VOIP (voice over IP) technology. This system uses UDP as the transport for the data transmissions. If these UDP datagrams arrive at their destination out of sequence,what will happen?（）

A. UDP will send an ICMP Information Request to the source host.

B. UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.

C. UDP will drop the datagrams.

D. UDP will use the sequence numbers in the datagram headers to reassemble the data in the correct order.

E. UDP will not acknowledge the datagrams and wait for a retransmission of the datagrams.

参考答案：C

第2题：

You are using flat files as the data source for one of your data warehousing applications. To optimize the application performance， you plan to move the data from the flat files to clustered tables in an Oracle database.While migrating the data， you want to have minimal impact on the database performance and optimize the dataload operation. Which method would you use to load data into the Oracle database（）

A、Use the external table population.
B、Use the Oracle Data Pump export and import utility.
C、Use the conventional path data load of the SQL*Loader utility.
D、Use the INSERT INTO...SELECT command to load the data

正确答案:C

第3题：

Which three statements are true about Oracle Data Pump export and import operations?()

A. You can detach from a data pump export job and reattach later.

B. Data pump uses parallel execution server processes to implement parallel import.

C. Data pump import requires the import file to be in a directory owned by the oracle owner.

D. The master table is the last object to be exported by the data pump.

E. You can detach from a data pump import job and reattach later.

参考答案：A, B, D

第4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? （）

A、Choose Tools -> Data Block Wizard, select View as the data source type, and base the block on the columns from the bales.
B、Choose Tools -> Data Block Wizard, select Table as the data source type, and base the block on the columns from the tables.
C、Select 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.
D、Select 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.
E、Choose Tools -> Data Block Wizard, select Stored Procedure as the data source type, and base the block on the columns the tables.
F、Select 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.

正确答案:F

第5题：

How do objects pass messages in Java？（）

A、They pass messages by modifying each other’s member variables
B、They pass messages by modifying the static member variables of each other’s classes
C、They pass messages by calling each other’s instance member methods
D、They pass messages by calling static member methods of each other’s classes.

正确答案:C

第6题：

You are creating the DEPT_SAL data block from the PAYHIST form. Users should be able to enter a valid department ID number, which will then display the employee salary information for that department. This data block could potentially retrieve a large number of records. Since users will probably only view a small number of these records, only 10 records should be fetched at one time. How would you create the data block?（）

A、Select 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.
B、Choose Tools -> Data Block Wizard, select Table as the data source type, and base the block on the columns from the tables.
C、Choose Tools -> Data Block Wizard, select, View as the data source type, and base the block on the columns from the tables.
D、Select 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 'FROM clause query', and enter the SELECT statement in the Query Data Source Name property.
E、Select the Data Block node in the Object Navigator and click the Create button. Alter the Query Data Source Type, Query Data Source Name, Query Data Sources Columns, and Query Data Source Arguments properties to create a stored procedure that uses a red cursor.

正确答案:E

第7题：

What does it mean for a variable in the Application Editor to be defined as a parameter?（）

A、The variable can be used to pass data to and from subflows.
B、The value for that variable can be supplied via Application Configuration in Application Administration.
C、The value for that variable is defined by the calling application.
D、The variable can be used in conditional steps.
E、The variable can be used to pass data to and from VoiceXML applications.

正确答案:B

第8题：

You are the administrator of a SQL Server 2000 computer. The server contains a database that stores financial data. You want to use Data Transformation Services packages to import numeric data from other SQL server computers. The precision and scale values of this data are not defined consistently on the other servers.

You want to prevent any loss of data during the import operations. What should you do?

A．Use the ALTER COLUMN clause of the ALTER TABLE statement to change data types in the source tables. Change the data types so that they will use the lowest precision and scale values of the data that will be transferred.

B．Use the ALTER COLUMN clause of the ALTER TABLE statement to change data types in the destination tables. Change the data types to reflect the highest precision and scale values involved in data transfer.

C．Set a flag on each DTS transformation to require an exact match between source and destination columns.

D．Set the maximum error count for each DTS transformation task equal to the number of rows of data you are importing. Use an exception file to store any rows of data that generate errors.

E．Write Microsoft ActiveX script. for each DTS transformation. Use the script. to recast data types to the destinations precision and scale values.

正确答案：B
解析：Explanation: The ALTER COLUMN clause of the ALTER TABLE statement can be used to change the definition of a column and can be used to alter the precision and scale values of the data types. The destination precision should be changed so no data would be lost. The transformation to a data type with higher precision is automatic and would not require any coding.

Note: The precision of the data type refers to the number of digits in a number while the scale is the number of digits to the right of the decimal point in a number. Thus the number 702.85 has a precision of 5 and a scale of 2. The default maximum precision of numeric and decimal data types is 38.

Incorrect Answers:
A: The ALTER COLUMN clause of the ALTER TABLE statement can be used to change the definition of a column and can be used to alter the precision and scale values of the data types. However, we want to prevent any loss of data therefore we need to ensure that the data being imported correlates with the definition of the destination column. If it does not, any constraint that might exist on the destination column will prevent the data from being inserted.

C: Setting DTS transformation to require an exact match between source and destination columns refers to the data in the columns.

D: When the a maximum error count value for a DTS transformation task specifies the sum of row-level errors detected by the Transform. Data task and batch failures. When the Max error count value is exceeded, DTS task execution is terminated. Because rows containing errors detected by the DTS transformation task are discarded before batch submission, these errors do not trigger nor count as batch failures. Errors caught at the destination will fail the batch and add one to the error count regardless of how many rows are in the batch.

E: Recasting data types to the destinations precision could result in loss of data. The destination precision should be changed so no data would be lost.

Note: The capabilities of a Data Transformation Service package can be extended by using
Microsoft ActiveX scripts that implement the objects, properties, methods, and collections of the DTS object model. With ActiveX scripts the data can be formatted and transformed as it is copied from its source to the destination location.

An ActiveX script. transformation applies to tasks that work on the source data on a row-by-row basis and can be used to replace a two-digit state code in the source data with the legal abbreviation of the state in the destination data; set columns to a default of spaces, validate important columns in the source data and skip records that contain invalid data to prevent them from being copied to the destination, and alter the precision and scale values of data as the data copied from the source to the destination.

第9题：

You are creating a form that will access an Oracle8 database. On which three sources can you base a data block?（）

A、BFILE
B、REF column
C、Object table
D、Column object
E、INSTEAD-OF trigger

正确答案:B,C,D

第10题：

You can use Oracle Flashback to look at past activity in your database. What are two other characteristics of Oracle Flashback？（）

A、Oracle Flashback uses undo information to construct consistent data.
B、You can use a cursor opened while using an Oracle Flashback image to perform DML once you deactivate Oracle Flashback in your session.
C、You can only use Oracle Flashback view of the data if the required records are still in the online redo log files.
D、Oracle Flashback lists the DML that was executed during the period you identify when initiating your session.

正确答案:A,B

多选题What are three uses for record groups?（）ATo pass data to a pop-up menu.BTo populate a base table block.CTo pass data to other form modules.DTo pass data to other Oracle products.ETo dynamically construct SELECT statements.FTo server as the source for a

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