@InProceedings{GrayPoole90,
  title =        "{P}arallel-{DB}4{GL}: {A}n implementation of a self-describing object-oriented database application generator on transputer hardware",
  author=        "Gray,  J. P. and Poole,  F.",
  editor=        "Turner,  Stephen J.",
  pages =        "34--49",
  booktitle=     "{OUG}-12: {T}ools and {T}echniques for {T}ransputer {A}pplications",
  isbn=          "90 5199 029 4",
  year=          "1990",
  month=         "mar",
  abstract=      "In general, this research project is concerned with the use
     of transputer based parallel hardware to improve the
     performance of database software. Specifically, the aim of
     the project is the enhancement of a database application
     generation system, Data Base 4th Generation Language
     (DB4GL), by converting the DB4GL generated database
     applications to run on transputer networks.A prototype
     Parallel-DB4GL (P-DB4GL) system has been designed and
     implemented. In P-DB4GL, the application code modules
     generated by DB4GL have been redesigned as concurrent Occam
     [InmosSSb] processes. A number of DB4GL data access code
     modules (entity handlers and schema handlers) have been
     implemented, and used to construct simple database
     applications. Additionally, simulations of DB4GL modules not
     yet implemented (for example, User Processes and Filer
     Processes) have been written, and used in the testing of
     these simple database applications.The P-DB4GL applications
     have been test run on a number of different transputer
     configurations. Results have been obtained which show
     significant performance improvements when applications are
     run on small (one to four processors) transputer networks.
     The principal benefit comes from the ability to perform
     multiple concurrent disc input/ouput, thus increasing disc
     throughput, and hence improving overall application
     performance. Development and testing of the prototype
     P-DB4GL has confirmed the feasibility of using transputer
     based parallel hardware for DB4GL applications. It has
     indicated how and where significant performance gains can be
     obtained in the full working version of P-DB4GL, currently
     under development."
}