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Accessing data from asynchronously maintained index

  • US 7,814,117 B2
  • Filed: 04/05/2007
  • Issued: 10/12/2010
  • Est. Priority Date: 04/05/2007
  • Status: Active Grant
First Claim
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1. A method comprising:

  • determining a plurality of values, wherein each value of the plurality of values represents a logical point in time at which a database reflects changes made by committed transactions;

    maintaining, on a volatile or non-volatile computer-readable storage medium, a particular value of the plurality of values that represents a particular logical point in time at which an index was synchronized, by one or more processors, with an indexed table indexed by the index;

    receiving a query after the particular logical point in time; and

    using the particular value to compute results of the query based on a state of the index and the indexed table as of the particular logical point in time represented by the particular value;

    wherein the method is performed by one or more computing devices.

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