The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 1995
Filed:
Mar. 03, 1993
Applicant:
Inventor:
Shoji Shiga, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
395600 ; 364D / ; 36422281 ; 3642831 ; 3642822 ; 364261 ;
Abstract
The database system includes a definition data file to store definition data for the storage units established in the database file, and loads the definition data from such definition data file to the definition data storage section, refers to the loaded definition data, and opens, updates/retrieves and closes the database file. A re-loading judgment section judges whether or not the definition data for the storage units have been changed after loading definition data to the definition data storage section and before opening of the data base file and, if the definition data have been changed, directs re-loading of the definition data.