Explain clearly and concisely (you can give examples)of how the use of a query-plan-flash could be implemented to compare and store query execution plans over time with the "University" database ? Note: using this database scheme

Paragraph Schema Diagram for University Database takes student ID aTte - dept-name fof crad ID sec id ester ear grade section course id course course id title credits department advisor dept namedept name building budget time slot building time slot id room no start time end time instructor ID narrie dept name salary prereg classroom building capacity prereg id teaches ear