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From: sachar@hou2d.UUCP
Newsgroups: comp.databases
Subject: Logical Log Files for Database Recovery
Message-ID: <1594@hou2d.UUCP>
Date: Wed, 23-Sep-87 09:38:23 EDT
Article-I.D.: hou2d.1594
Posted: Wed Sep 23 09:38:23 1987
Date-Received: Sat, 26-Sep-87 10:03:06 EDT
Organization: AT&T Bell Laboratories, Holmdel
Lines: 17
Keywords: Databases, Recovery


                               Logical Log Files
          
      In some DBMS's logical log files are maintained  for database
      recovery as compared to before and after log files. I think
       the main difference is that in logical log file, you just
     record the database operations rather then the copy of the data
      before or after the database operation.

       Can anyone point out to some good reference dicussing pros and
       cons of logical log files.

      I will really apprciate any kind of information.
   
          Thanks
                         Harvi Sachar
                         AT&T Bell Labs