Database device and processing of data in a database

Abstract

Implementations of database systems and methods of processing database data are provided. For example, a method includes: transforming data from one or more source databases into at least one stream of data; coupling the at least one stream of data to at least one stream processing node for processing; and processing the at least one stream of data at the at least one stream processing nodes. Another method includes: writing a record to a database in an append-only log file; indexing the append-only log file; referencing a history of at least one version of an index structure, such as a key, if the record exists in the database with the same index structure; look up the record in the database by index structure of the append-only log file; and exposing an ordered queue including an order in which transactions were written in addition to using an index structure look up.

Dependencies are inferred from the claim text.