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Physical model

19 十月, 2015 - 10:12
  • Physical representation of the database
  • Lowest level of abstractions •
  • It is how the data is stored, dealing with
  • Run-time performance
  • Storage utilization & compression
  • File organization & access methods
  • Data encryption
  • Physical level – managed by OS
  • Provide concepts that describe the details of how data is stored in the computer’s memory