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:
Mar. 13, 2001
Filed:
May. 28, 1999
Michael Abraham Benedikt, Chicago, IL (US);
Leonid Libkin, Basking Ridge, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
Methods and apparatus are provided for ensuring that queries presented to a database are safe thus providing solutions to both undecidability and lack of effective syntax issues. In a one aspect of the invention, a method for use in a database system includes obtaining an original query entered by a user. The invention then provides for pre-processing the query before submittal to a database engine associated with the database system wherein a result of the pre-processing operation is to ensure that a query provided to the engine is safe. Safety has a different meaning depending on the application. For example, safety may include ensuring that a query will return an output with finite results or it may include ensuring that certain geometric properties in the query are preserved in the output.