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Data Base Questions & Answers (Compiled from UPSC, SSC ,PSC ,IBPS previous question papers)

  • Fragmentation of a file system
  • ACan always be prevented
  • Boccurs only is file is not used properly
  • CCan be temporarily removed by compaction
  • DNone of above
  • File record length
  • Ashould always be fixed
  • Bshould always be variable
  • Cshould be chosen to match the data character
  • Ddepends upon the size of file
  • Network structure
  • Ais a physical representation of data
  • Bis conceptually simple
  • Callows many to many relationships
  • Dnone of above
  • Ascending order of data hierarchy is
  • Abit->byte->record->field->file->database
  • Bbit->byte->field->record->file->database
  • Cbyte->bit->field->record->file->database
  • Dbyte->bit->field->file->record->database
  • Allocation map
  • AUsed to store program data
  • Bspecifies which blocks are used by which file
  • Cis updated by application programs
  • Dallow programs to erase files