Please answer carefully below question1. Find out the entities in the specifications above.2. Find out the relationships among the entities.3. Figure out attributes of the entities and (if any) of therelationships.4. Draw any part of E-R diagram using the information obtained from the previousquestions5. Are there any constraints between the entities and the relationships? For sure yes,mention some. (extra points) The Motor Vehicle Department DatabaseThe Motor Vehicle Branch administers driving tests and issues driver's licenses.Any person who wants a driver's license must take a learner's exam at any MotorVehicle Branch in the province.If he/she fails the exam, he can take the exam again any time after a week of thefailed exam date, at any branch.If he passes the exam, he is issued a license (type = learner's) with a uniquelicense number.A learner's license may contain a single restriction on it. The person may takehis driver's exam at any branch any time before the learner's license expirydate (which is usually set at six months after the license issue date).If he passes the exam, the branch issues him a driver's license.A driver's license must also record if the driver has completed driver's education, forinsurance purposes.

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1. Find out the entities in the specifications above. 2. Find out the relationships among the entities. 3. Figure out attributes of the entities and (if any) of the relationships. 4. Draw any part of E-R diagram using the information obtained from the previous questions 5. Are there any constraints between the entities and the relationships? For sure yes, mention some. (extra points)

1. Find out the entities in the specifications above. 2. Find out the relationships among the entities. 3. Figure out attributes of the entities and (if any) of the relationships. 4. Draw any part of E-R diagram using the information obtained from the previous questions 5. Are there any constraints between the entities and the relationships? For sure yes, mention some. (extra points)

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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Concept explainers

Enhanced ER Model

The enhanced ER model is an abbreviation for Enhanced Entity-Relationship (EER) model. As you know, the entity-relationship (ER) model is a pictorial illustration of the relationship between various entities of a domain. In the case of a large amount of data with multiple interrelated entities, the ER diagrams become complex and tough to interpret. For such cases, the need for enhancement in the ER model was observed, and thus, the EER model was designed.

Question

The Motor Vehicle Department Database
The Motor Vehicle Branch administers driving tests and issues driver's licenses.
Any person who wants a driver's license must take a learner's exam at any Motor
Vehicle Branch in the province.
If he/she fails the exam, he can take the exam again any time after a week of the
failed exam date, at any branch.
If he passes the exam, he is issued a license (type = learner's) with a unique
license number.
A learner's license may contain a single restriction on it. The person may take
his driver's exam at any branch any time before the learner's license expiry
date (which is usually set at six months after the license issue date).
If he passes the exam, the branch issues him a driver's license.
A driver's license must also record if the driver has completed driver's education, for
insurance purposes.

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