System and method for data storage and retrieval

Details System and method for data storage and retrieval System and method for data storage and retrieval

2005-08-09

2005-08-09

Corrielus, Jean M. (Department: 2162)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000, C707S793000

Reexamination Certificate

active

06928446

ABSTRACT:
An improved method for creating and searching data files in a database is described. The system and method uses a memory in which is stored a main data file having a plurality of data records each having a data field containing data representative of an alpha-numeric product descriptor. A bitmask generator generates a bitmask value representative of the data in the data field of each data record and appends to each data record stored in the memory a bitmask data field containing the bitmask value representative of the data in the data field of the corresponding data record. A prefix generator generates a plurality of prefix files that are stored in the memory, the prefix files including a copy of selected data records of the main data file, the data records being selected as a function of the prefix of the alpha-numeric product descriptors corresponding to the data in the data fields of the data records. In performing a search to obtain information, both the appended main data file and the prefix files are available to the searching procedure.

REFERENCES:
patent: 6023696 (2000-02-01), Osborn et al.
patent: 6052687 (2000-04-01), Miura et al.

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