The design of a mass memory for a database computer

ABSTRACT

The design of a mass memory for a database computer (DBC) is described. The DBC, a specialized back-end computer, is capable of managing 10**9 to 10**10 bytes of data and can support multiple data models with minimal software in the front-end computer. The design is based on moving-head disk technology which is perceived to be the most cost-effective technology for supporting such large volumes of on-line data. The design calls for certain key modifications in existing modes of disk component usage in an effort to incorporate a high degree of intelligence in the device and to enhance its throughput. These modifications pertain to activating concurrently all of the read/write heads available on an access mechanism and to the processing of data on-the-fly by associating a processing element with each read/write head.

REFERENCES

• 1: Ozkarahan, E.A., Schuster, S. A., and Smith, K.C., "RAP-An Associative Processor for Database Management," Proceedings of AFIPS, National Computer Conference, 44, 1975, 379-387.
• 2: Schuster, S. A., Ozkarahan, E.A., and Smith, K.C. "A Virtual Memory System for a Relational Associative Processor," Proceedings of AFIPS, National Computer Conference, 45, 1976, 855-862.
• 3: George P. Copeland, Jr. , G. J. Lipovski , Stanley Y.W. Su, The architecture of CASSM: A cellular system for non-numeric processing, Proceedings of the 1st annual symposium on Computer architecture, p.121-128, December 09-11, 1973
• 4: LeBoss, B., "IBM Price Cuts Cause a Tremor," Electronics, 50, 8, (April 14, 1977), 80-81.
• 5: E. F. Codd, A relational model of data for large shared data banks, Communications of the ACM, v.13 n.6, p.377-387, June 1970 [doi>10.1145/362384.362685]
• 6: Berra, P.B., "Some Problems in Associative Processor Applications to Database Management," Proceedings of AFIPS National Computer Conference, 43, (1974), 1-5.
• 7: IBM Information Management System/Virtual Storage (IMS/VS) Version 1, General Information Manual, GH20-1, 60-4.
• 8: CODASYL Data Base Task Group, April 1971 Report, ACM.
• 9: Bremer, J. W., "Hardware Technology in the Year 2001," Computer, 9, 12, (December, 1976), 31-36.
• 10: David K. Hsiao , Krishnamurthi Kannan , Douglas S. Kerr, Structure memory designs for a database computer, Proceedings of the 1977 annual conference, p.343-350, January 1977 [doi>10.1145/800179.810225]
• 11: Krishnamurthi Kannan, The design and performance of a database computer., 1977
• 12: Banerjee, J., Hsiao, D.K., Kerr, D.S., "DBC Software Requirements for Supporting Network Databases," The Ohio State University, Tech. Rep. No. OSU-CISRC-TR-77-4 (June, 1977).
• 13: Banerjee, J., and Hsiao, D.K., "DBC Software Requirements for Supporting Relational Databases," (To Appear), Nov., 1977.
• 14: Krishnamurthi Kannan , David K. Hsiao , Douglas S. Kerr, A microprogrammed keyword transformation unit for a database computer, Proceedings of the 10th annual workshop on Microprogramming, p.71-79, October 05-07, 1977, Niagara Falls, New York, United States
• 15: Hoagland, A. D., "Magnetic Recording Storage," IEEE Transactions on Computer, C-25, 12, (December, 1976), 1283-1289.

INDEX TERMS

Primary Classification:
  B. Hardware
  B.3 MEMORY STRUCTURES
      B.3.2 Design Styles
          Subjects: Mass storage (e.g., magnetic, optical, RAID)

Additional Classification:
  H. Information Systems
  H.2 DATABASE MANAGEMENT
      H.2.6 Database Machines

General Terms:
Design, Management