Transmitting and Receiving Data between Databases with Different Database Processing Capabilities

A server system having one or more processors and memory sends, to a first database, a first request for data based on first data-retrieval criteria. The first database is schemaless and operates in accordance with first database processing capabilities. The server system receives, in response to the first request, a first set of data from the first database, where the first set of data is selected by the first database in accordance with the first data-retrieval criteria. The server system generates a second database from the first set of data selectively retrieved from the first database. The second database has an associated schema and operates in accordance with second database processing capabilities different from the first database processing capabilities. The server system provides access to the first set of data in the second database in accordance with the second database processing capabilities.