Partitioning and sorting logical units of data prior to reaching

Details Partitioning and sorting logical units of data prior to reaching Partitioning and sorting logical units of data prior to reaching

1995-09-25

1998-09-22

Black, Thomas G.

Data processing: database and file management or data structures

Database design

Data structure types

707 1, 707 10, 395680, G06F 1730

Patent

active

058130047

ABSTRACT:
A data partitioning technique for use in sorting data records of a data file. A plurality of data records is retrieved from the file until a trigger condition is satisfied. For example, data is retrieved until a trigger field within the plurality of data records changes from one value to another value, or until a comparison of the trigger field, using a conditional operator, to a predetermined value is satisfied, or until the trigger field changes from one value to another value after a predetermined number of data records is retrieved. After the trigger condition is satisfied, one or more of the retrieved data records are sorted. The sorted records are then available for output prior to reaching the end of the file.

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J.P. Loftis, "Providing Dynamic Sorting and Searching Capabilities Using SQL forms", Information Science Abstracts, p. 11, Jun. 1990.
Archie Charles McKellar, assigned to International Business Machines; "Sort Process"; Defensive Publication No. T913,007, published Aug. 14, 1973 (913 O.G. 393).

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