Patent Document ID: 8239750
Application ID: 12560389

Base Claim:
1. A computer-implemented method comprising: (A) converting a plurality of atomic tuples, representing contents of a plurality of cells stored in a grid, into a plurality of schema tuples, comprising: (A)(1) assigning a plurality of catalog-defined types to the plurality of atomic tuples; (A)(2) assigning a role of locator to a first subset of the plurality of cells based on the plurality of catalog-defined logical types; and (A)(3) determining whether a locator tuple slice in the plurality of cells contains a missing value.

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Claim 23:
23. The method of claim 1 , wherein a second subset of the plurality of cells represent a plurality of values associated with a content name, and wherein the method further comprises: (B) identifying, based on contents of the plurality of cells in the second subset and the content name, a formula having terms including at least two of the plurality of content names.