Product Documentation

FairCom ISAM for C

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Transaction History

TransactionHistory() accesses audit logs of transaction controlled files to add valuable historical capabilities in any application. This allows the programmer to examine the changes performed on each unit of information at a very detailed level.

One such use of this technology is to track the changes made to a manufactured device as it proceeds through an automated fabrication factory. The exact history of each individual manufactured device can be determined from the transaction log files.


The following types of information can be gathered from the transaction logs:

  • A particular record position of a specified data file.
  • A particular, unique key value of a specified index.
  • All updates to a specified file.
  • Updates from particular user ID and/or node name.
  • Some combination of the above.

In This Section

TransactionHistory Basic Operation

TransactionHistory Output

TransactionHistory Advanced Operation