1. What is an ‘‘operation?'' Can operations be inherited? What is polymorphism?
2. Describe the advanced relationship known as ‘‘aggregation.'' What are its benefits?
3. What is encapsulation in object-oriented databases? What are its benefits?
4. What is an abstract data type (ADT)? What is the significance of a database system that is capable of creating ADTs?
5. What is an object/relational database management system? What are its advantages?