INTEGRATION DATABASE FRAMEWORK

摘要

A database system comprising a first database including a database manager and a schema with set of rules enabling the database manager to store and access data items in the first database, and a second database storing a plurality of data items. The schema further including rules to enable the database manager to access at least a subset of the data items in the second database. The first database further includes a first link pointing from the primary item to a replica of the secondary item stored in the first database, and a second link pointing from the replica to the secondary item in the second database.

主权项

1. A method for creating a link between a first database and a second database, said first database comprising a database manager and a schema including set of rules enabling said database manager to store and access primary data items in said first database, said second database (20) storing a plurality of secondary data items, said method comprising:
extending said schema to include rules to enable said database manager to access at least a subset of said items in said second database, wherein said schema includes a plurality of data item types, said data item types each includes a marker field indicating if a data item is a replica of a secondary item in the second database, receiving a request to establish a link from a primary item in the first database to a secondary item in the second database, verifying that said schema includes access rules to enable said database manager to access said secondary item, accessing, by said database manager, said secondary item and storing, in said first database, a replica of said secondary item, creating a link from said replica to said secondary item, and creating a link from said primary item to said replica.