Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories
Reexamination Certificate
2005-05-17
2005-05-17
Tran, Denise (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Hierarchical memories
C711S141000, C707S793000, C707S793000
Reexamination Certificate
active
06895471
ABSTRACT:
A method and apparatus for processing (transporting) data, such as in a data warehouse system. In one embodiment, the data are received from a source and compared to data in a lookup cache comprising a subset of data from a first data set (e.g., a dimension table). Instances of the data not present in a lookup cache (that is, new data) are identified. Information corresponding to these instances are generated (e.g., a unique identifier is associated with each of these instances), and the first data set is updated accordingly. The lookup cache is then updated with the new data and the unique identifiers. Accordingly, the information (data) in the lookup cache and in the first data set are in synchronization. The lookup cache does not need to be rebuilt (e.g., to update a second data set such as a fact table).
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Mukhopadhyay Pinaki
Samaddar Sumitro
Tse Eva Man-Yan
Informatica Corporation
Tran Denise
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