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Sequence support operators for an abstract database

  • US 20060212418A1
  • Filed: 03/17/2005
  • Published: 09/21/2006
  • Est. Priority Date: 03/17/2005
  • Status: Active Grant
First Claim
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1. A method of providing access to data in a physical database, comprising:

  • providing a database abstraction model that defines a plurality of logical fields that each provide an access method for accessing data elements in the physical database, wherein at least one logical field further provides, metadata indicating a data value used to order the data elements, accessed for the at least one logical field, into an ordered sequence;

    providing a query building interface for composing an abstract query from the plurality of logical fields, wherein the abstract query includes a sequence operator for specifying which data elements, from the ordered sequence, should be retrieved for the abstract query; and

    providing a runtime component configured to generate, from the abstract query, a resolved query executable against the physical database, wherein the resolved query is configured to retrieve the specified data elements from the ordered sequence.

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