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Distributed data access methods and apparatus for process control systems

  • US 20040177060A1
  • Filed: 03/03/2003
  • Published: 09/09/2004
  • Est. Priority Date: 03/03/2003
  • Status: Active Grant
First Claim
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1. A method of accessing a database associated with a process control system, comprising:

  • receiving a request for information from a client application in an intermediate data server process;

    determining if the information is stored within a data source associated with the intermediate data server process;

    sending a request for the information from the intermediate data server process to another process if the information is not stored within the data source; and

    accessing the database to retrieve the information subsequent to the other process receiving the request for the information.

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