b. Consider the below Enhanced Entity relationship diagram and answer the following questions. PBox City JoiningDate PName PeriD Degree Address EamilyName FAMILY Joinsin PERSON StudID EmpID Age Date_of_Birth Manager EMPLOYEE STUDENT Manage Manages Identify and write the following: Question Write answer below Sub class entities Attribute on Relationship Identify any two key attributes Identify the derived attribute 3 4 Weak Entity Find the Partial identifier Multivalued Attribute 6. 7

b. Consider the below Enhanced Entity relationship diagram and answer the following questions. PBox City JoiningDate PName PeriD Degree Address EamilyName FAMILY Joinsin PERSON StudID EmpID Age Date_of_Birth Manager EMPLOYEE STUDENT Manage Manages Identify and write the following: Question Write answer below Sub class entities Attribute on Relationship Identify any two key attributes Identify the derived attribute 3 4 Weak Entity Find the Partial identifier Multivalued Attribute 6. 7

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: Based on the following Entity-Relationship Diagram with the following requirements: There are…

A: Answer: 1) ER-Diagram:-

Q: The cardinality ratio depends on the real-world meaning of the entity types involved and is defined…

A: Cardinality ratio in database design refers to the relationship between entities, indicating how…

Q: Draw a relational model diagram with the following: 1. Patient Entity: RUT (Primary Key): Integer…

A: Relational Model Diagram: It is a diagram that represents the relationship along the entity in the…

Q: Benefits benefit_name {plan_options) category cost start_date end_date staff_id Enroll name salary…

A: The image depicts an Entity-Relationship Diagram (ERD) with three entities: Benefits, Enroll, and…

Q: Can you give an example of an entity in the MiniMarket Warehouse Warehouse Database, please input in…

A: A data warehousing is an electronic method of organizing,analyzing and reporting information.In…

Q: The primary key for a one (A) to many (B) binary relationship set between entity A and entity B with…

A: Explanation: Binary relationship shows the relationship between two entities. In one to many…

Q: Match the shape description with the ER Diagram description Diamonds underlined…

A: Explanation: In ERD diagram, the diamond symbol is used to show the relationship between entities.…

Q: To manage the materials of a factory, please give the E-R diagrams. Such entity sets are involved as…

A: The E-R diagram is given below:

Q: Given the ER diagram above, answer the following questions: Name an entity type that has more than…

A: a)Department is an example of entity having more than one relation. b)Departmentname is a key…

Q: What does cardinality represent in an entity-relationship diagram? 1:The uniquely identifiable…

A: This question comes from Database Management System which is a paper of Computer Science. Let's…

Q: Explain the terms: Entity Attribute Types of relationship Cardinality Optionality. I NEED…

A: Entity: - Any existing real word object is an entity in the Database. Each entity has attributes,…

Q: This diagram shows the entities and entity relationships. The diagram is used to model data after…

A: Entity Relationship Model, or ER Model, is a high-level conceptual data model diagram. To create a…

Q: A Bus Company owns a number of buses. Each bus is allocated to a particular route, although some…

A: Answer is

Q: Which descriptive property is associated with an entity in entity relationship model(IRM) A)…

A: The objective of the question is to identify the descriptive property that is associated with an…

Q: b) Use the Fermat test to determine whether 513 is prime number or not. If not, what is the nearest…

A: (b).

Q: Identify Entity Types Entity Name Entity Aliases Entity Description Occurrence Identify Relationship…

A: Entity name Entity Description Entity Aliases Occurrence PRODUCT_ID(PK) Product ID INT 60…

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

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

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

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

Which of the following criteria would make an entity a weak entity? a.) If the primary key is not derived from the parent entity in the relationship b.) If the entity can exist without the entity with which it has a relationship c.) If the primary key of a related entity contains the primary key of the parent entity d.) If the entity has a primary key that is partially derived from the parent entity
Create a rule that specifies when an attribute from one entity type should be extracted and placed in a related entity type.
Based on the following Entity-Relationship Diagram with the following requirements: There are Professors (ie users) with the changeable attributes Professor_Name, Field, College, PhD_Date There are Flubs (ie posts) with the unchangeable attributes Content, Purpose, Moment, Inventor (which is the creating Professor) There are Bounces (ie shares) where a Professor can share another Professor's Flub Add ID attributes as necessary Content of Flubs only needs to be a text of fixed length Professors can have/be Colleagues (ie friends/followers) A Flub can get Citations (ie likes) by other Professors Write the necessary SQL Queries for the following functions. Adding a new Professor Changing a specific Professor's Professor_Name Removing a Flub by ID Show a portfolio of the Flubs by a Professor in reverse chronological order Show how many Bounces and how many Citations a Flub of particular ID has Show a portfolio of all Flubs and Bounces (the Flubs bounced) by all of a Professor's…
Decipher the business rules for this ER Diagram :
Based on the following Entity-Relationship Diagram with the following requirements: There are Professors (ie users) with the changeable attributes Professor_Name, Field, College, PhD_Date There are Flubs (ie posts) with the unchangeable attributes Content, Purpose, Moment, Inventor (which is the creating Professor) There are Bounces (ie shares) where a Professor can share another Professor's Flub Add ID attributes as necessary Content of Flubs only needs to be a text of fixed length Professors can have/be Colleagues (ie friends/followers) A Flub can get Citations (ie likes) by other Professors Write the necessary SQL Queries for the following functions. Adding a new Professor Changing a specific Professor's Professor_Name Removing a Flub by ID Show a portfolio of the Flubs by a Professor in reverse chronological order Show how many Bounces and how many Citations a Flub of particular ID has Show a portfolio of all Flubs and Bounces (the Flubs bounced) by all of a Professor's…
Using er assistant create an Entity Relationship Diagram(ERD) with appropriate entries, relevant attributes, and relations to support the following business rules, and write a few lines to defend your erd. You need to design a database to keep track of clubs at a high school. Attributes: A student may only join one club Some students do not join at all Club needs to have one student Need to capture students: Name Address Year of grad All Phone numbers Club name Club advisor Meeting dates