SCOPE is an acronym for Structured Computations Optimized for Parallel Execution, a declarative language for working with large-scale data. It is still under development at Microsoft. If you know SQL then working with SCOPE will be quite easy as SCOPE builds on SQL.
The execution environment is different from that RDBMS oriented data.
Data is still modeled as rows. Every row has typed columns and eveyr rowset has a well-defined schema. There is a SCOPe compiler that comes up with optimized execution plan and a runtime execution plan.