An interface must meet which of these restrictions? I. It must not have any fields. II. Methods cannot have a void return type. II. It must not have any method implementations. IV. A class can implement only one interface. I and III O , II, and III O , II, and IV Il and IV O , II, II, and IV

An interface must meet which of these restrictions? I. It must not have any fields. II. Methods cannot have a void return type. II. It must not have any method implementations. IV. A class can implement only one interface. I and III O , II, and III O , II, and IV Il and IV O , II, II, and IV

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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Question

An interface must meet which of these restrictions?
I. It must not have any fields.
II. Methods cannot have a void return type.
II. It must not have any method implementations.
IV. A class can implement only one interface.
I and III
O , II, and III
O , II, and IV
O Il and IV
O I, II, III, and IV

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