BIB-VERSION:: CS-TR-v2.0
          ID:: STAN//CS-TR-80-797
       ENTRY:: June 08, 1995
ORGANIZATION:: Stanford University, Department of Computer Science
       TITLE:: Read-only transactions in a distributed database
        TYPE:: Technical Report
      AUTHOR:: Garcia-Molina, Hector
      AUTHOR:: Wiederhold, Gio
        DATE:: April 1980
       PAGES:: 28
    ABSTRACT:: A read-only transaction or query is a transaction which does
               not modify any data. Read-only transactions could be
               processed with general transaction processing algorithms, but
               in many cases it is more efficient to process read-only
               transactions with special algorithms which take advantage of
               the knowledge that the transaction only reads. This paper
               defines the various consistency and currency requirements
               that read-only transactions may have. The processing of the
               different classes of read-only transactions in a distributed
               database is discussed. The concept of R insularity is
               introduced to characterize both the read-only and update
               algorithms. Several simple update and read-only transaction
               processing algorithms are presented to illustrate how the
               query requirements and the update algorithms affect the
               read-only transaction processing algorithms.
       NOTES:: [Adminitrivia V1/Prg/19950608]
         END:: STAN//CS-TR-80-797