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
Multi-function wrench for a power tool
Image quality assessment
Grip for a racket
Accessing a base station
Fast and compact circuit for bus inversion
Method and system for facilitating micropayments in a financial transaction system
Motor control system, motor control device, and brushless motor
  Randomly Featured Patents
Planar waveguides made by use of photosensitive changes to the refractive index of a deposited layer
Recorded-signal position detecting circuit
Tool presetting device
2-substituted amino-4, 6-di-tertiary-buthyl-5-hydroxy-1, 3-pyrimidines as antiinflammatory agents
Jig for positioning and fixing workpiece
Circuit-on-foil process for manufacturing a laminated semiconductor package substrate having embedded conductive patterns
Portable radio carrying case
Semiconductor chip having pads with plural junctions for different assembly methods
Method and apparatus for information mining and filtering
Portable emergency safety shower