Context: Another approach to hardware support for database management was ICL's CAFS accelerator, a hardware disk controller with programmable search capabilities. In the long term, these efforts were generally unsuccessful because specialized database machines could not keep pace with the rapid development and progress of general-purpose computers. Thus most database systems nowadays are software systems running on general-purpose hardware, using general-purpose computer data storage. However this idea is still pursued for certain applications by some companies like Netezza and Oracle (Exadata).

Question: What is a CAFS accelerator?
Answer: a hardware disk controller with programmable search capabilities

Question: Did the CAFS accelerator work as planned?
Answer: efforts were generally unsuccessful

Question: How are today's database systems run?
Answer: general-purpose hardware

Question: Name a company that is still working on the CAFS accellerator?
Answer: Netezza and Oracle (Exadata)

Question: What is a CAFS decelerator?
Answer: Unanswerable

Question: What is no longer used in modern database systems?
Answer: Unanswerable

Question: What companies still work on the CAFS decelerator?
Answer: Unanswerable

Question: What are rarely seen nowadays?
Answer: Unanswerable

Question: What was a failed approach to hardware support for database management?
Answer: Unanswerable