Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
X-ray imaging
Method and apparatus for token-based context caching
Heat retaining device
Maize variety hybrid X13A495
Nanogap device for field enhancement and a system for nanoparticle detection using the same
Approaching object detection system
Integrated emergency medical database system
  Randomly Featured Patents
Vector processor for processing recurrent equations at a high speed
Reducing electrical power consumption in a radio transceiver by de-energizing selected components when speech is not present
Hole punching and reinforcing apparatus and method of use
Reducing dislocation formation in semiconductor devices through targeted carbon implantation
Removable tire for construction set joint element
Twist lock plug
Method and system for a magnetic disk drive employing a quadratic compensation function for determining an offset correction value
Diffusion barrier coatings, and related articles and processes
Semiconductor device and method for manufacturing the same
Apparatus for excavating and crushing tree stumps