### ERD (Entity-Relationship Diagram) Question---#### Question 1Given the ERD (Entity-Relationship Diagram) below, which of the following is the correct description for it?[Diagram of Entity A connected to Entity B with a 0..1 and 1 relationship indicators]---**Options:**A. "A" instance can be associated with one and only one "B" instance, and "B" instance must be associated with one or more "A" instances. B. "B" instance must be associated with one and only one "A" instance, and "A" instance must be associated with one or more "B" instances. C. Every "A" instance must be associated with at least one "B" instance, and each "B" instance may or may not be associated with one "A" instance. D. None of the options is correct. E. Every "B" instance must be associated with one "A" instance, and each "A" instance may or may not be associated with one "B" instance. - **Correct Answer:** E. Every "B" instance must be associated with one "A" instance, and each "A" instance may or may not be associated with one "B" instance.**Explanation:**The diagram shows a relationship where each instance of Entity B must be associated with one and only one instance of Entity A (denoted by the '1' on the A end), while each instance of Entity A may or may not be associated with an instance of Entity B (denoted by the '0..1' on the B end). This means that:- For each "B" instance, there is a mandatory association to one "A" instance.- For each "A" instance, there can be zero or one association to a "B" instance. This kind of relationship is often termed as "mandatory one-to-one from B to A, optional one” from A to B."---This question would likely be seen in a course related to database design, particularly in sections covering Entity-Relationship Diagrams (ERDs) and their correct interpretation.

The ERD depicts a one-to-many relationship between entities "A" and "B." Each instance of "A" can be…

Question 1 X Given the ERD below, which of the following is the correct description for it? A Ho B OA. "A" instance can be associated with one and only one "B" instance, and "B" instance must be associated with one or more "A" instances OB. "B" instance must be associated with one and only one "A" instance, and "A" instance must be associated with one or more "B" instances OC.Every "A" instance must be associated with at least one "B" instance, and each "B" instance may or may not be associated with one "A" instance O D. none of the options is correct ⒸE. Every "B" instance must be associated with one "A" Instance, and each "A" instance may or may not be associated with one "B" instance

Question 1 X Given the ERD below, which of the following is the correct description for it? A Ho B OA. "A" instance can be associated with one and only one "B" instance, and "B" instance must be associated with one or more "A" instances OB. "B" instance must be associated with one and only one "A" instance, and "A" instance must be associated with one or more "B" instances OC.Every "A" instance must be associated with at least one "B" instance, and each "B" instance may or may not be associated with one "A" instance O D. none of the options is correct ⒸE. Every "B" instance must be associated with one "A" Instance, and each "A" instance may or may not be associated with one "B" instance

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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