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Method and apparatus for data access and update in a shared file environment

  • US 5,790,848 A
  • Filed: 02/03/1995
  • Issued: 08/04/1998
  • Est. Priority Date: 02/03/1995
  • Status: Expired due to Term
First Claim
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1. A method for providing simultaneous access by at least first and second users to a common file on a computer network which has at least one physical storage device, said method comprising the steps of:

  • defining in said at least one physical storage device a common partition for storing common data which is accessible to said first and second users;

    defining in said at least one physical storage device a first partition for storing first update data representing changes to the common data in first user selected data fields in said common partition without storing unchanged common data, said first update data in said first partition is at least partially inaccessible to said second user;

    providing said first update data to the first partition; and

    selectively merging said first update data into said common partition at a desired time so as to replace the common data in said first user selected data fields with said first update data.

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