194 results about "Geographic distribution" patented technology

The invention relates to an access and integration method of an isomerous database for modal multiplexing under the gridding condition. In the method, first, a virtual database for the modal multiplexing is used to describe various database resources and provide an overall uniform view of the isomerous database resource; then, through the resource register way, the resource provider confirms the mapping relation between the database mode of the isomerous database and the database mode of the virtual database, through inquiring about a mapping method, an inquiry request based on the virtual database is converted into an inquiry request based on the real database resource, the service of the virtual database is used to provide a uniform interface for accessing the isomerous database to the resource user; finally, under the gridding condition of including the isomerous database resource, the whole course from the register to the use of the database resource is realized, the integrated course of the isomerous database resource is finished through a gridding application service result, thereby ensuring that the developer of the gridding application service can make use of the service interface of the virtual database to obtain the integrated information from the isomerous database resource. The invention has good practicability, the resource provider can finish most register work automatically only by using a client program; the resource user can obtain the needed isomerous database resource through the uniform interface of the virtual database without needing to concern the geographic distribution, the database mode, the semantic information, etc. of the real database resource.