Data processing: database and file management or data structures – Database design – Data structure types
Patent
1997-06-20
1998-09-15
Amsbury, Wayne
Data processing: database and file management or data structures
Database design
Data structure types
707102, G06F 1730
Patent
active
058095004
ABSTRACT:
A method for processing or modifying programs and databases containing abbreviated date fields to achieve year 2000 compliancy includes examining an original database to ascertain the location of date fields, creating a supplementary PALM file that includes fully expanded date fields representative of corresponding date fields in the original database and modifying instructions or modules of the original program to access the PALM file for date information instead of the original database. The PALM file contains fully expanded date representations of abbreviated date fields of the original database. The PALM file also includes record identifiers and field identifiers to enable the modified program to access the required date information. Portions of the program requiring modification are identified by scanning for keywords that are generated from an examination of the database and/or from field layout definitions. The program is also examined for related keyword constructs or redefinitions found in the program itself. When converted, the modified program accesses the PALM file for date processing and accesses the original database for other processing steps. The method enables a computational system to determine the periods between dates in a non-ambiguous manner and yet advantageously uses the original database to retain system compatibility.
REFERENCES:
patent: 5600836 (1997-02-01), Alter
patent: 5630118 (1997-05-01), Shaughnessy
patent: 5668989 (1997-09-01), Mao
patent: 5719826 (1998-02-01), Lips
patent: 5737735 (1998-04-01), Soeder
The Year 2000 and 2-Digit Dates: A Guide for Planning and Implementation, 3rd ed., IBM, May 1, 1996.
Amsbury Wayne
Century Technology Services, Inc.
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