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小學(xué)教師資格證《綜合素質(zhì)》閱讀理解能力練習題

時(shí)間:2025-08-17 00:36:10 教師資格 我要投稿

2017年小學(xué)教師資格證《綜合素質(zhì)》閱讀理解能力練習題

q. 1 : oracle immediately re-uses the space assigned to row-directory portion of the data block once you delete the corresponding rows.
  
  1. true
  2. false  
  
  2
   
  q. 2 : which of the following three portions of a data block are collectively called as overhead.
  
  1. table directory, row directory and row data
  2. data block header, table diretory and free space
  3. table directory, row directory and data blcok header
  4. data block header, row data and row header  
  
  3  
  
  q. 3 : which portion of the data block contains table or index data
  
  1. table directory
  2. row directory
  3. overhead
  4. row data
  
  4   
  
  q. 4 : what are the two space management parameters for controling the use of free space in a data block
  
  1. initial and next
  2. pctfree and pctused
  3. tablespace and storage
  4. free space cannot be controlled at block level  
  
  2
    
  q. 5 : the maximum number of transactions that a block can support is
  
  1. 100
  2. 255
  3. 1000
  4. unlimited
   
  2
 

2017年小學(xué)教師資格證《綜合素質(zhì)》閱讀理解能力練習題

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