Resources Contact Us Home
Restructuring view maintenance system and method

Image Number 10 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
Systems and methods for implementing multi-application tabs and tab sets
Surface-emitting laser light source using two-dimensional photonic crystal
Method and apparatus for monitoring and/or controlling the curing of cements used in medical procedures
Image processing apparatus, remote management system, license update method, and computer program product
Method, apparatus, computer program, and computer readable storage media for controlling the insertion of tab sheets into a print job
Memory with separate read and write paths
  Randomly Featured Patents
Printhead assembly having a casing part for supporting printhead modules
Vibration damping silicone composition
Weather resistant sound attenuating modular communications headset
Patellar flange and femoral knee-joint prosthesis
Underwater cryogenic storage vessel
Purple membrane preparations having increased holographic diffraction efficiency
Electrolytically forming a lot of valve-metal-bodies for use in capacitors
Vented pneumatic foot controller
Spatula for wafer transport
Apparatus for controlling fluid flow rate