nvert the following ERD in Chen's notation to an ERD in IE notation. All entities, attributes, and relationships are artificial. You need to clearly show strong and weak entities, foreign key migrations, total participations and partial participations, and cardinality ratios. 02 a1 e2_a2 r1_a1 e1 a1 e1_a2 N 1 F? R1 F1

nvert the following ERD in Chen's notation to an ERD in IE notation. All entities, attributes, and relationships are artificial. You need to clearly show strong and weak entities, foreign key migrations, total participations and partial participations, and cardinality ratios. 02 a1 e2_a2 r1_a1 e1 a1 e1_a2 N 1 F? R1 F1

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

See similar textbooks

Related questions

Q: Define a weak entity set and a strong entity set

A: (1) An entity set refers to a collection of similar objects, concepts, or ideas that can be uniquely…

Q: Given the following EER diagram, write down the corresponding relations using the method taught in…

A: The answer is

Q: Every SuperKey is a key but not vice versa True False In Relational database modeling, any complex…

A: Relational database modeling is a fundamental aspect of database management systems, focusing on the…

Q: A weak entity set may always be turned into a strong entity set by adding the primary-key attributes…

A: A weak entity set may permanently be transformed into a strong entity set by including the main…

Q: Q1. ER Model . Create an ER Model for the following: A customer (eg. Tom) may (or may not) give…

Q: Examine the differences and similarities between Concentration vs breadth For each entity,…

A: Difference between concentration vs breadth: Concentration: Advanced math, physics, and graphics…

Q: The goal of this assignment is to design a conceptual schema using an ER data model. Draw an ER…

A: The assignment aims to design a conceptual schema using an Entity-Relationship (ER) data model for a…

Q: Construct an ERD for Leslie’s Auto Sales. Make sure to denote your primary and foreign keys. Note:…

A: An ER diagram (Entity-Relationship diagram) is a graphical representation of entities and their…

Q: A relationship between cash receipt and customer for an enterprise has cardinalities (0,1) cash…

A: Given: A relationship between cash receipt and customer for an enterprise has cardinalities (0,1)…

Q: Describe how functional dependencies may be used to show: • There is a many-to-one connection set…

A: Recognizing functional dependencies: The functional dependencies may be used to identify the…

Q: 3.4. Which statements are correct? a. A weak entity type can only have one attribute type. b. A weak…

A: The solution to the given problem is below.

Q: In the context of EER data modeling, one can represent entities using superclasses and subclasses.…

A: Extended-ER (EER) data model: EER is recognized as the high-level data model that is capable of…

Q: Are associative entities also weak entities? Why or why not? If yes, is there anything special about…

A: Associative entity: • An associative entity associates the instances of one or more entity types. •…

Q: Explain how functional dependencies can be used to indicate the following:• A one-to-one…

A: The functional dependency is a relationship that exists between two attributes. It typically exists…

Q: can be converted to a strong entity set by simply adding the appropriate attributes. Why,

A: For the following reasons, a weak entity set is required:

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

Convert the following ERD in Chen's notation to an ERD in IE notation. All
entities, attributes, and relationships are artificial. You need to clearly show
strong and weak entities, foreign key migrations, total participations and partial
participations, and cardinality ratios.
02 a1
e2_a2
1_a1
01 a1
e1_a2
1
E2
R1
E1
r2_a1
1
r5_a1
R2
R5
r3_a1
N
e3 a1
e3_a2
e3_a3
e4_a1
R3
e4_a2
E4
R4
ЕЗ
r8_a1
r7_a1
1
R7
1
R8
N
r6_a1
e5_a1
e5_a2
r6_a2
e6 a1
E6
R6
M
Е5
e6_a2
r9_a1
1
R9
r9_a2
e7_a2
r10_a1
e7 a1
e8_a1
N
e8_a2
E8
R10
E7

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

There are two alternative methods of representing an employee’s optional (single) phone number. The first is to use a nullable attribute and the second is to use a weak entity. 1. Given a requirement that a large number of the employees (> 80%) are assigned a phone number, which is the preferred method and why? 2. Given a requirement that only a small number of employees (< 10%) are assigned phone numbers, which is the preferred method and why? 3. How would the requirement of ‘multiple phone numbers can be assigned to an Employee’ affect your decision? Your answers should consider the performance tradeoff between number of database operations per query and record’s size.
What does an associative entity model? a.) Associative entities model pure relationships rather than entities. b.) Associative entities model entities that are independent. c.) Associative entities model the real-world scenarios of ways to look up data. d.) Associative entities model attributes and how they are linked to entities.
What is the difference between a feeble entity set and a robust entity set?
In order to be used as a primary key, which of these characteristics must an attribute possess with respect to a single instance of the entity? There must be a maximum of one attribute instance. There must be many instances of the attribute. There must be at most one entity instance that each attribute instance describes. There must be at least one instance of the attribute. There must be zero or more instances of the attribute.
"Weak entity type" means what? Does it hide something? What's "attribute"?How would an ER chart show sia? Please draw.
conver er model to relation model please draw the answer as digram
Describe how functional dependencies may be used to show: • There is a many-to-one connection set between the entity sets student and instructor, as well as a one-to-one relationship set between the two.
A weak entity set may always be transformed into a strong entity set by including the primary-key attributes of the identifying entity set in its attributes. Explain what kind of redundancy will arise as a consequence of our decision.
What exactly is the weak entity type? What is the key to it? Give an example what is an altrubute specialization?how ia represent on ER diagram? Give Example and draw corresponding diagram
Develop a logical data model based on the following requirements:• Refinement of the conceptual model - including a refined Enhanced Entity-Relationship (EER) diagram.• Derivation of relations from the refined conceptual model.• Validation of logical model using normalization to BCNF.• Validation of logical model against corresponding user transactions.• Definition of integrity constraints including:- Primary key constraints.- Referential Integrity (foreign key) constraints.- Entity integrity (NULL and default value) constraints.- Alternate key constraints.- General constraints if any. Entities Airplane Model Technician Expertise Traffic Controller Medical Examination Union Test Testing Event Relationships Airplane is of Model (1:M) Technician has Expertise in Model (M:M) Traffic Controller undergoes Medical Examination (1:1) Employee belongs to Union (1:1) Airplane is Tested using Test (M:M) Testing Event records Airplane, Technician, and Test (M:M:M) Attributes Airplane…
Swing Jazz Club ERD Problem Follow the Simple Procedure for ERD diagramming to design an ERD using the following user provided information. Remember the ERD will eventually turn into the design for a database from a top down view. Make sure you resolve any many to many conflicts. Label an identifier or primary key and all pertinent attributes given. If an attribute is not readily apparent from the user information, then make one up that makes sense for the particular entity. Therefore, all entities should end up with at least an identifier and another attribute that makes sense. You may use any of the approaches shown by the book, though the ER-Model and Crow’s foot are the most common. Make sure you show entities, relationships, cardinality, and optionality. Swing Jazz Club The Swing Jazz Club teaches swing and jazz dancing and offers both private and group lessons. Swing Jazz charges $60 dollars per hour for a private lesson and $10 dollars per hour for a group lesson.…
San Diego Hospital Example ERD Problem Entity Relationship Diagramming is a "top down" user process. Take the following user provided information and draw the appropriate ERD. Follow the Simple Procedure for ERD diagramming to design an ERD using the following user provided information. Remember the ERD will eventually turn into the design for a database from a top down view. Make sure you resolve any many to many conflicts. Label an identifier or primary key and all pertinent attributes given. If an attribute is not readily apparent from the user information, then make one up that makes sense for the particular entity. Therefore, all entities should end up with at least an identifier and another attribute that makes sense. Please use a drawing tool of some type to show the ERD diagram (Word, PowerPoint, and Visio all work well). I want you to get in the habit of drawing these with a computer instead of by hand, as this will be important as we get to more difficult…