International Business Machines Corporation

Wen J Zhu

Nigel G Slinger

John Benjamin Tobler

Arthur Marais

Daniel Kozin

Meichi M Lin

Maggie M Lin

Timothy E McAllister

According to one embodiment of the present invention, a system inserts data into a database object. The system associates the database object with a parameter specifying materialization of data for the database object. The system inserts data into the database object and materializes the data in accordance with the parameter to provide access to the data from the database object, wherein the parameter specifies a portion of the data to be materialized upon insertion. Embodiments of the present invention further include a method and computer program product for inserting data into a database object in substantially the same manners described above.

Database insert with deferred materialization

According to one embodiment, a computer-implemented method of decompressing compressed data is described. A first decompression dictionary is analyzed, the first decompression dictionary including a plurality of chains each with uncompressed data portions distributed in a non-contiguous manner within the first decompression dictionary based on an addressing scheme, where the uncompressed data portions of each chain form a corresponding uncompressed version of compressed data. A second decompression dictionary is generated by combining the uncompressed data portions of each of the chains in the first decompression dictionary to form uncompressed versions of compressed data and instructions are inserted within the second decompression dictionary to decompress compressed data. The compressed data are decompressed by applying the compressed data to the second decompression dictionary. Embodiments further include a system and computer program product for decompressing compressed data in substantially the same manner described above.

Data decompression utilizing pre-expanded dictionaries during decompression

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Beijing, Switzerland

Wen J Zhu