| 摘要 |
Systems and methods are provided for providing data from a plurality of databases stored on a plurality of disparate servers. A query is received for data from a plurality of databases stored on a plurality of disparate servers. An address for a first server is resolved that stores a first database identified by the catalog field in the query using a logical name-to-connection metadata map. A first sub-query is transmitted to the first server based on the received query, and a first sub-query response is received from the first server. The resolving, transmitting, and receiving are repeated for a second server. The first sub-query response and the second sub-query response are combined to generate a query response according to the received query, and the query response is transmitted. |
