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单选题
Which statement about windows and blocks is true?()
A

Transaction management is block-oriented rather than window-oriented. 

B

Forms automatically navigates to an item located in an activated window. 

C

A window may contain multiple blocks, but each block can only span one window. 

D

A window can contain multiple canvases, and an item can be located on multiple canvases. 


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考题 单选题Which statement is true about a whole consistent database backup on a database running in ARCHIVELOG mode()A The backup will consist of used data blocks only.B The database must be shut down to accomplish the backup.C The backup can be accomplished without shutting down the database.D The backup will contain all database files that have never been backed up.

考题 多选题Which two statements are true regarding a tablespace()AIt can span multiple databases.BIt can consist of multiple data files.CIt can contain blocks of different sizes.DIt can contain segments of different sizes.EIt can contain a part of a nonpartitioned segment.

考题 单选题Which statement is true about a whole consistent database backup on a database running in ARCHIVELOGmode()A The backup will consist of used data blocks only.B The database must be shut down to accomplish the backup.C The backup can be accomplished without shutting down the database.D The backup will contain all database files that have never been backed up

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考题 单选题In the COURSE_ENROLLMENT form module, you define a master-detail relation between the COURSES_OFFERED data block and the STUDENT data block, respectively. To implement block coordination, which statement must be true?()A  The Enforce Primary Key property on the STUDENT block is set to Yes. B  The Alias property on the COURSES_OFFERED block is set to Student. C  The Copy Value from item property on the foreign key item in the STUDENT blocks is set to the primary key item of the COURSES_OFFERED block. D  The Synchronize with item property on the foreign key item in the STUDENT block is set to the primary key item of the COURSES_OFFERED block.

考题 单选题The DB_BLOCK_CHECKING initialization 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 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