多选题Examine the list of variables and their data types：  AME DATA Type  TS， TS1 TIMESTAMP  TSZ TIMESTAMP WITH TIME ZONE  TLZ TIMESTAMP WITH LOCAL TIME ZONE  IYM INTERVAL YEAR TO MONTH  IDS， IDSI INTERVAL YEAR To SECOND   Which three expressions using the n

第1题：

Which of the following datatypes store time-zone information in the database?（）

• A、TIMESTAMP
• B、DATE
• C、TIMESTAMP WITH TIME ZONE
• D、TIMESTAMP WITH LOCAL TIME ZONE
• E、DATETIME

第2题：

Which three are DATETIME data types that can be used when specifying column definitions?（）

• A、TIMESTAMP
• B、INTERVAL MONTH TO DAY
• C、INTERVAL DAY TO SECOND
• D、INTERVAL YEAR TO MONTH
• E、TIMESTAMP WITH DATABASE TIMEZONE

第3题：

Your Oracle10g database contains a table with a TIMESTAMP TO LOCAL TIME ZONE column. There are about two hundred column values for the column. You issued the following statement：   SQL> ALTER DATABASE SET TIME_ZONE =’Europe/London’；   What will be the result of issuing the above statement？（）

• A、 The statement will be executed successfully， and a new time zone will be set for the database.
• B、 The statement will be executed successfully， but a new time zone will not be set for the database.
• C、 The statement will not be executed successfully because the SET TIME_ZONE clause can be used only with the ALTER SESSION statement.
• D、 The statement will not be executed successfully because the ALTER DATABASE SET TIME_ZONE statement is used only when the database contains no table with the TIMESTAMP TO LOCAL TIME ZONE column.

第4题：

Which three statements are true regarding the data types in Oracle Database 10g/11g?（）

• A、Only one LONG column can be used per table 
• B、A TIMESTAMP data type column stores only time values with fractional seconds 
• C、The BLOB data type column is used to store binary data in an operating system file 
• D、The minimum column width that can be specified for a VARCHAR2 data type column is one 
• E、The value for a CHAR data type column is blank-padded to the maximum defined column width

第5题：

You have set the value of the NLS_TIMESTAMP_TZ_FORMAT parameter in the parameter file to YYYY/x7fMM/x7fDD. The default format of which two data types would be affected by this setting？（）

• A、DATE
• B、TIMESTAMP
• C、INTERVAL YEAR TO MONTH
• D、INTERVAL DAY TO SECOND
• E、TIMESTAMP WITH LOCAL TIME ZONE

第6题：

You issued the following command at the UNIX environment：   % setenv ORA_SDTZ ’OZ_TZ’   What will be the impact of issuing the above command？（）  

• A、 The operating system local time zone will be set for a user session using the operating system environment variable.
• B、 The database local time zone will be set for a user session using the operating system environment variable.
• C、 The operating system local time zone will be set for the database using the operating system environment
• D、 The database local time zone will be set for the database using the operating system environment variable.

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第13题：

You create a table with the PERIOD FOR clause to enable the use of the Temporal Validity feature of Oracle Database 12c. Examine the table definition: Which three statements are true concerning the use of the Valid Time Temporal feature for the EMPLOYEES table?（）

• A、The valid time columns employee_time_start and employee_time_end are automatically created.
• B、The same statement may filter on both transaction time and valid temporal time by using the AS OF TIMESTAMP and PERIOD FOR clauses.
• C、The valid time columns are not populated by the Oracle Server automatically.
• D、The valid time columns are visible by default when the table is described.
• E、Setting the session valid time using DBMS_FLASHBACK_ARCHIVE.ENABLE_AT_VALID_TIME sets the visibility for data manipulatio

第14题：

These are the details about V$FLASHBACK_DATABASE_STAT：  SQL> DESC V$FLASHBACK_DATABASE_STAT Name Null？ Type  ------------- -------- --------------  BEGIN_TIME DATE END_TIME DATE  FLASHBACK_DATA NUMBER  DB_DATA NUMBER REDO_DATA NUMBER  ESTIMATED_FLASHBACK_SIZE NUMBER  Which two statements regarding the V$FLASHBACK_DATABASE_STAT view are true？ （）

• A、BEGIN_TIME is the time at which Flashback logging is enabled.
• B、END_TIME is the time at which the query is executed on the view.
• C、REDO_DATA is the number of bytes of redo data written during the interval.
• D、This view contains information about flashback data pertaining to the last 24 hours.
• E、FLASHBACK_DATA is the amount of flashback data generated since the database was opened.

第15题：

You have set the value of the NLS_TIMESTAMP_TZ_FORMAT parameter in the parameter file to YYYY-MM-DD. The default format of which two data types would be affected by this setting？ （）

• A、 DATE
• B、 TIMESTAMP
• C、 INTERVAL YEAR TO MONTH
• D、 INTERVAL DAY TO SECOND
• E、 TIMESTAMP WITH LOCAL TIME ZONE

第16题：

You created the ORDERS table in your database by using the following code：   SQL> CREATE TABLE ORDERS （ORDER_DATE TIMESTAMP（0） WITH TIME ZONE）；   Then， you inserted data in the ORDERS table and saved it by issuing the following statements：SQL> INSERT INTO ORDERS VALUES（’18-AUG-00 10：26：44 PM America/New_York’）；   SQL> INSERT INTO ORDERS VALUES（’23-AUG-02 12：46：34 PM America/New_York’）；   SQL> COMMIT；   Next， you issued the following statement to change the time zone for the database：   SQL> ALTER DATABASE SET TIME_ZONE=’Europe/London’；   What will be the result of executing the above statement？（）  

• A、 The statement will fail.
• B、 The statement will be executed successfully， and the new time zone will be set for the database.
• C、 The statement will be executed successfully， but the new time zone will be set for the current session.
• D、The statement will be executed successfully， but the new time zone will neither be set for the database nor for a specific session.

第17题：

Examine the list of variables and their data types：  AME DATA Type  TS， TS1 TIMESTAMP  TSZ TIMESTAMP WITH TIME ZONE  TLZ TIMESTAMP WITH LOCAL TIME ZONE  IYM INTERVAL YEAR TO MONTH  IDS， IDSI INTERVAL YEAR To SECOND   Which three expressions using the new data and time data types are valid？（）

• A、IDS* 2
• B、TS + IYM
• C、TS –TSI
• D、IDS – TS
• E、IDS + IYM

第18题：

You need to ensure the Order Control team is able to track the number of orders that reach the production department. What should you do?（）

• A、Create a new Time dimension based on the Holiday table. Use derived columns for the month and the year.
• B、Create a Server Time dimension. Within this dimension， enable the time periods year， month， and date. Select the Additional Manufacturing calendar option.
• C、Create a new Time dimension based on the date values within the ProductOrderStatus table. Flag those days on which no orders were received as Holiday.
• D、Create a new Time dimension based on a data source view named query. Derive the data for this data source view from unique dates within the ProductOrderStatus table. Use a subquery to identify the holidays and derived columns for the month and the year.

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