Abstract: A database management system, comprising: a storage adapted for storing: a plurality of data objects organized according to a data model, and a plurality of stream operator wrappers each wrapping a stream operator and having at least one port for receiving, via a network, instructions for: scheduling activation of the wrapped stream operator, connecting the wrapped stream operator with another stream operator wrapped by another of the plurality of stream operator wrappers, and/or deploying the wrapped stream operator; a processing circuitry for executing the plurality of stream operator wrappers.

Abstract: The present invention proposes an apparatus and method for running a plurality of threads. The apparatus includes a memory, a client and an RPC manager. The client is configured to generate, for each of the plurality of threads an RPC request for executing an operation and to store the generated RPC requests in a database in the memory. The RPC manager is configured to order the stored RPC requests. Furthermore, the client is configured to send the ordered RPC requests in an RPC batch.

Abstract: A device of managing replication action, comprising a database management system (DBMS) interface configured to receive from one of a plurality of first local DBMS servers in a first servers cluster target data for replication, and a replication event including an indication of a remote replication management device in a second servers cluster of a plurality of second local DBMS servers, a network interface configured to establish a coupling with the remote replication management device according to the received replication event, forward the target data to the remote replication management device according to the replication event so as to allow the remote replication management device to instruct a creation of a replica of the target data for storage by a remote DBMS server which is a member of the second servers cluster.

Abstract: The present invention proposes an apparatus and method for running a plurality of threads. The apparatus includes a memory, a client and an RPC manager. The client is configured to generate, for each of the plurality of threads an RPC request for executing an operation and to store the generated RPC requests in a database in the memory. The RPC manager is configured to order the stored RPC requests. Furthermore, the client is configured to send the ordered RPC requests in an RPC batch.