04384325 is referenced by 66 patents and cites 7 patents.

Apparatus for and method of searching a data base using variable search criteria. The data base consists of a set of files or portions thereof. Each file is divided into a number of records whereby all records of a given file have the same format but the records of different files may have different formats. A field format register is used to define the format of the records within a given file. The field format register specifies the location and width of each field within a record. To perform a search, a field-by-field comparison of each record is made to a reference word. The comparison yields a less than, equal to or greater than result for each field of each record. A field comparison register describes the expected result of the field-by-field comparison. A given field is designated true if the comparison yields the expected result specified for that field in the field comparison register. A given field is designated false if the comparison yields other than the expected result specified in the field comparison register. A hit on a given record is defined as satisfying a Boolean expression using the field-by-field true/false definitions as input variables. A given record is a miss if the Boolean expression is not satisfied.

Title
Apparatus and method for searching a data base using variable search criteria
Application Number
6/161983
Publication Number
4384325
Application Date
June 23, 1980
Publication Date
May 17, 1983
Inventor
Howard M Wagner
Roseville
MN, US
Nancy E Preckshot
Minneapolis
MN, US
Bennett W Manning
Eagan
MN, US
Leo J Slechta Jr
Rosemount
MN, US
Agent
Marshall M Truex
Kenneth T Grace
William C Fuess
Assignee
Sperry Corporation
NY, US
IPC
G06F 7/34
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