“…Elaborating seminal proposals for inference control in information systems, and being in the spirit of many similar approaches to secrecy as concisely exposed in [14], previous work on Controlled Interaction Execution, CIE, originally only dealt with a single owner of a logic-oriented database system like a relational one solely employed for querying, and later also included updates and non-monotonic belief management, see the summaries [4,5], and the abstraction [6]. Based on that, and grossly summarized, in our vision [7] we proposed an architecture of an inference control front-end for uniformly shielding a possibly heterogeneous collection of data sources.…”