1. SANTA-G Sensor

2. Query Engine Classes

3. Canonical Producer DBProducer CP Servlet Query Service Query Engine QE API Search Engine Trace Files Sensor CP API Create table Conn id resultset SE API seek data query To/from Where ?

4. Direct or Indirect Query Engine connection? Sensor Servlet Query Engine either or i.e. how is the Query Service implemented ?

5. Query Engine Authenticate LCAS Plugin ? Query Engine API Query Service Search Engine Plugins Core

6. Meaning? Meaning could be defined in two domains: Security domain: Defined by LCAS plugin re authorisation Authentication has fixed meaning Information domain Defined by Query Engine plugin The rest of the CP is ‘neutral’ to meaning?