Resources Contact Us Home
Restructuring view maintenance system and method

Image Number 2 for United States Patent #6915305.

A database maintenance system and method are particularly suitable for maintaining a consistency of data between two or more database tables having schemas that may be heterogeneous (e.g., restructuring views of each other). Typically, one table is a base table and a second table is a restructuring view of the base table and may have been generated for faster query response, research, or the like. The restructuring view may have occurred naturally, or the base table may have been converted to the restructuring view using a series of operators and optionally, a middleware schema. The restructuring view maintenance system is preferably configured to monitor changes to the base table, including changes to data and to metadata. The maintenance system is configured to receive notification of a modification to a base table, investigate the modifications, and determine which operator(s) have been used to convert the base table to the restructuring view. For each modification to the base table, the system then determines, according to the type of modification and the type of transformation used, which of a selected group of actions to take to map the modification onto the restructuring view. The selected group of actions may include variously: insert, update, delete, rename relation, drop table, and rename column, according to the type of modification and the mapping of the relationship between the base table and the target table.

  Recently Added Patents
Horizontal aggregations in a relational database management system
Systems and methods for tracking mobile terrestrial terminals for satellite communications
Lookup front end packet input processor
Sheet coil type resolver
Active metal fuel cells
Biomarkers of gastric cancer and use thereof
Adjustable draw bar for trailer hitches
  Randomly Featured Patents
System for controlling an original image scanning for use in slit exposure type image recording apparatus
Preventing artifacts that may be produced when bottling PDL type files converted from raster images
Vehicular plow
Magnetic disk loading/ejecting apparatus
Electret device
Structure for the compositely formed sound box
1-(3-heteroarylpropyl- or -prop-2-enyl)-4-benzylpiperidines used as NMDA receptor antagonists
Fire retardant, fast reacting epoxy resin
Brokering and facilitating consumer projects in an e-commerce system
Method and system for configuring a timer