Database Evolution

• 1970’s - batch-computing model

• 1980’s - on-line transaction processing (OLTP)

  • automate daily end-user business transactions
  • first application: automated teller machine (ATM) transactions

• 1990’s - on-line analytical processing

  • decision support systems
  • customer profiling, sales forecasting, risk analysis
  • projected market: $8 billion in 1998

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