# In Search of the 64-Bit “Killer App”

- ## Conventional Wisdom Says It’s an RDBMS for Data Warehousing (ie. Lots of potential I/O to be avoided)

- ## Actual Practice Suggests Otherwise

- ## RDBMS Vendors Have Overcome the I/O Problems

  - Partitioned Tables
  - Parallel I/O
  - Background Reads/Writes

- ## Buffer “Hits” in an RDBMS are Already High

  - Data Locality and Aging Algorithms do a Good Job
  - If Buffer Hits = 90%, You Can Only Improve by 10/90 = 11%

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