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Attribute of one table matching to the primary key of other table, is called as

  • foreign key
  • secondary key
  • candidate key
  • composite key
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1. Attribute of one table matching to the primary key of other table, is called as

  • foreign key
  • secondary key
  • candidate key
  • composite key

2. File record length

  • should always be fixed
  • should always be variable
  • should be chosen to match the data character
  • depends upon the size of file

3. Related fields in a data base are grouped to form

  • data file
  • data record
  • menu
  • bank

4. Which command is used to set a link between two database files

  • JOIN
  • UPDATE
  • BROWSE
  • SET RELATION

5. Data management system may be implemented as

  • system software
  • application software
  • computer program
  • all of above
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