history of database systems

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Relational model has reigned supreme among other data models, over period

Relational model has reigned supreme among other data models, over period
  • A. 1950s
  • B. 1960s
  • C. 1970s
  • D. 1980s
  • Correct Answer: Option D

Widespread use of hard disks changed scenario for data processing greatly in late

Widespread use of hard disks changed scenario for data processing greatly in late
  • A. 1950s
  • B. 1960s
  • C. 1970s
  • D. 1980s
  • Correct Answer: Option B