G PHYSICS
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G06 COMPUTING OR CALCULATING; COUNTING
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G06F ELECTRIC DIGITAL DATA PROCESSING
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16/00 Information retrieval; Database structures therefor; File system structures therefor
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G06F16/20 of structured data, e.g. relational data
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G06F16/24 Querying
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G06F16/245 Query processing
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G06F16/2458 Special types of queries, e.g. statistical queries, fuzzy queries or distributed queries
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G06F16/2462 Approximate or statistical queries
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