3. Suppose that you have written a time server, which periodically notifies its clients of the current date and time. Write an interface that the server could use to enforce a particular protocol on its clients. 4. Abstract classes and interfaces can both be used to specify common behavior of objects. How do you decide whether to use an interface or an abstract class? Explain your answer.

3. Suppose that you have written a time server, which periodically notifies its clients of the current date and time. Write an interface that the server could use to enforce a particular protocol on its clients. 4. Abstract classes and interfaces can both be used to specify common behavior of objects. How do you decide whether to use an interface or an abstract class? Explain your answer.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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