Towards a Transparent Data Access Model for the GridRPC Paradigm

In this demo we present our OBDA solution for Siemens Energy [5] which we de- velop as a part of the O PTIQUE project [3, 4] The demo will focus on three aspects of the solution:

Data management (persistent storage, transfer, consistent replication) is totally delegated to the service, whereas the applications simply access shared data via global

We detail how dependencies on nodes executing no component are avoided. The resulting mechanisms allow to ensure that if a node is suspected to have failed, a restart is needed only

We study the data complexity of conjunctive query answering under these new semantics, and show a general tractability result for all known first-order rewritable ontology languages.

When applied to the man- agement of the data used and produced by applications, this principle means that the grid infrastructure should automatically handle data storage and

majority quorum (we keep the true value and we correct the rest).Then, they send the value to the master who creates a copy at the nearest customer node (bring data closer to

The adapters (External Source and Sink Connectors, External Processor) are running as wrappers for the processing modules, taking care of the interaction with Kafka

The final step is to identify the top-k results, task which is performed by the execution engine module where it uses: Naive Algorithm which takes the top-k re- sults from each CN