service constructor.

create a database.

NewMergedIterator returns a DatabaseScanner for given group of databases.

NewPatchedIterator returns a DatabaseScanner for given patch and base database.

the service type.

the database group.

TransactionalDatabase adds transactional feature on its underlying database .

interface for transaction executor methods must be thread safe write operations must be executed atomically.

interface for full functional database methods must be thread safe.

interface for transactional execution of multiple writes methods must be thread safe.

interface for deletion methods must be thread safe.

interface for key->database mapping policy for a group of databases.

interface for key & value query methods must be thread safe.

interface for a logical database consisting of a group of databases.

interface for insertion and updating methods must be thread safe.

interface for key-space range scan methods must be thread safe.

interface for databases that support reversion.

interface for revertible feature methods must be thread safe.

interface for squashable transactional feature.

interface for databases that support reversion and revision tagging.

interface for databases that support reversion and revision tagging.

interface for transaction feature methods must be thread safe transaction sessions can be nested.

interface for databases that support transactions.