Patent attributes
A query is received from a client that specifies at least one database operation implicating data within a first database and within a second database. The second database includes a document store storing a collection of documents. Thereafter, a plurality of transactions responsive to the query are initiated to access the data within the first database and the second database. Execution of the plurality of transactions are coordinated between the first database and the second database. All changes specified by the at least one database operation are persisted in the first database including changes implicating data stored within the second database. Data responsive to the query can then be provided to the client.