| 摘要 |
<p>The preferred DataNet system of the present invention is a powerful and flexible market analysis and portfolio selection system, allowing the integration of multiple databases into a front-end platform. Integrated databases are cross-referenced, allowing acess to data from different databases from a single interface. In the preferred DataNet example embodiment, the data integration process gathers information from a plurality of data source servers using a loader client executing in an update process. Each update process receives financial data from its corresponding data source and provides the information to a DataNet server. When data for a particular security is received from the loader client, a loader manager uses a locally unique security identifier from the data received to request a a globally unique identifier (GSID) for the data from a cross server. The cross server provides the locally unique security identifier to a database manager to query a cross reference database for the GSID for the security. After receiving the GSID from the cross server, the loader manager provides the data received from the loader client to the database manager along with the GSID to update the information for the security in a database corresponding to the data source from which the data was received. All information from all data sources for a particular security may be retrieved from the database once the GSID for the security is determined. In the preferred embodiment, the user client portion of the DataNet system comprises a DataNet engine. The dataNet engine is a modular distributed object-oriented system that preferably comprises a plurality of user modules that interoperate with each other. The DataNet engine comprises a plurality of user modules that interoperate with each other. The DataNet engine comprises a Universe module, a Query module, a Formula module, a Graph module, an Aggregate module, a Simulation module, and a Reporting module. The DataNet engine modules allow the user to manipulate the data collected from the various databases.</p> |
