If you are familiar with a particular DBMS, classify its facilities into conceptual, external and internal schema facilities. Assess how well the DBMS conforms to the three-level architecture, and...

If you are familiar with a particular DBMS, classify its facilities into conceptual, external and internal schema facilities. Assess how well the DBMS conforms to the three-level architecture, and outline the advantages and disadvantages of any deviations which you have identified.