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
Terminal and method of controlling the same
Server chassis
Non-volatile memory and method having efficient on-chip block-copying with controlled error rate
Power generating apparatus of renewable energy type and method of attaching and detaching blade
Image enhancement based on multiple frames and motion estimation
Side portion of a circular saw blade
Systems and methods for programming an RFID reader
  Randomly Featured Patents
Exposure control apparatus for use with optical readers
Multifunctional back-flowing strong-suction blower
Point source speaker system
Gas outlet and switch device
Box
Cathodoluminescent phosphor lamp having extraction and diffusing grids and base for attachment to standard lighting fixtures
Automatic vessel supplying and labeling apparatus
Method for transmitting short messages
High stability aseismic bearing
Liquid crystal display and method for fabricating the same