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 first database can have a first transaction manager and the second database can have a second transaction manager. 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 is then coordinated using the first transaction manager and the second transaction manager. All changes specified by the at least one database operation are logged in a distributed log in the first database including changes implicating data stored within the second database. The distributed log is configured such that it is accessible by both of the first transaction manager and the second transaction manager.
