Suppose you are given the following requirement for a simple database for the employee management system: 1. An employee may work in up to two departments or may not be assigned to any department. 2. Each department must have one and may have up to three phone numbers. 3. Each department can have anywhere between 1 and 30 employees. 4. Each phone is used by one, and only one department. 5. Each phone is assigned to at least one, and may be assigned to up to 30 employees. 6. Each employee is assigned at at least one, but not more than 5 phones. Construct a clean and concise ER diagram for the database. Clearly indicate the cardinality mappings.

Suppose you are given the following requirement for a simple database for the employee management system: 1. An employee may work in up to two departments or may not be assigned to any department. 2. Each department must have one and may have up to three phone numbers. 3. Each department can have anywhere between 1 and 30 employees. 4. Each phone is used by one, and only one department. 5. Each phone is assigned to at least one, and may be assigned to up to 30 employees. 6. Each employee is assigned at at least one, but not more than 5 phones. Construct a clean and concise ER diagram for the database. Clearly indicate the cardinality mappings.

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: Consider the following database of a music record company: MUSICIAN(ID, Name, Surname, BirthYear,…

A: Imagine a great library filled with records, organized but not without problems accessible. Enter…

Q: n an EER diagram for a database used to manage a racket sport association (for example, US Tennis…

A: ER diagram description: ER diagram indicates the relationship between one entity to any other…

Q: Design a database that can satisfy the following requirements: a. For each marina, list the number,…

A: a. To store the data of the marinas, create a table with marina number as primary key and rest of…

Q: Case Study: National Football League (NFL) Suppose you are given the following requirements for a…

A: Objects (Entities) and Attributes:TeamsNameCityCoachCaptainPlayersNamePositionSkill LevelInjury…

Q: The following database is for part of the business of a car repair shop. Briefly, the database is to…

A: ER-Diagram:-It stands for Entity-Relationship diagram that is used to present a diagrammatical…

Q: 10. Draw an E/R diagram for a local restaurant, Tony's. You need to create a database to keep track…

A: ER Diagram is given below. Customer, Item and Order are Entities. Customer is related to Order by…

Q: Air Travel Agents (ATA) wants a database to keep information about its many offices and the people…

A: Refer the example for Enhanced Entity Relationship (ERR) which would involves several entities:

Q: Develop an EER model for the following situation using EER notation, as specified by your…

A: Here is the detailed explanation of ER diagram

Q: Consider the following information about a patient database

A: There are following Entities with attributes in the diagram: Patient PatientID Admission Date…

Q: 4. A database is built in the library to catalogue books and handle book lending. Each book in the…

A: 4a. In table User UID ( unique reference number ) of user is taken as primary key because it has to…

Q: 5. Database design often involves decisions about the storage of attributes. For example a Telephone…

A: Database design is a crucial aspect of information management, software development, and data-driven…

Q: Essential Oil product is marketed, testing is carried out based on the production batch from any…

A: It is defined as a collection of information that is organized so that it can be easily accessed,…

Q: పిరరర్

A: We are given two entities and we are going to draw ER diagram for it. Two entities are: Author and…

Q: A database about magazine subscribers typically contains a list of subscribers to each magazine but…

A: In a database that holds information about magazine subscribers, the typical structure involves…

Q: The problems for this chapter use a database for a simple department store that sells items to…

A: Please find the solution below in step 2. if you have any follow-up questions, feel free to post…

Q: An E-learning website needs your help to design its database. They need to store information about…

A: Answer is given below .

Q: A company database needs to store information about employees (identified by ssn, with salary and…

A: Introduction: An ER diagram is a graphical representation of entity-relationship data, which is used…

Question

Suppose you are given the following requirement
for a simple database for the employee
management system:
1. An employee may work in up to two
departments or may not be assigned to any
department.
2. Each department must have one and may have
up to three phone numbers.
3. Each department can have anywhere between 1
and 30 employees.
4. Each phone is used by one, and only one
department.
5. Each phone is assigned to at least one, and may
be assigned to up to 30 employees.
6. Each employee is assigned at at least one, but
not more than 5 phones.
Construct a clean and concise ER diagram for the
database. Clearly indicate the cardinality
mappings.

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

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

Database Design Before an Essential Oil product is marketed, testing is carried out based on the production batch from any essential oil. This is done to maintain the quality and content of the existing constituents in essential oils. Where the Test Percentage Content must reach the Minimum standard Percentage Content for each constituent. If there is one type of constituent that does not fulfill minimum standard, the batch will not be marketed because it does not meet the standard quality. 1. If recording the results of each testing process is still done manually,according to you please explain which approach fits between Centralized and View Integration for gathering requirements. 2. What Fact Finding Methods you will choose to getinformation related to the development of a database system to record the testing process, and explain the reasons for choosing. 3. Create 1-NF, 2-NF, 3-NF Normalization for the available forms. 4. Make an ERD (Entitiy Relationship Diagram) based on the…
Consider the following set of requirements for a Flight reservation database: We conduct numerous flights departing from and arriving at various airports. We maintain a record of airport codes and addresses. Here is our requirements: Each airline schedules many flights. A flight may be shared among multiple airlines, and therefore the flights can be scheduled by many airlines. When multiple airlines share the same flights, each flight can be scheduled by many airlines. The passenger capacity of each flight varies depending on the aircraft's size and can accommodate up to 220 passengers. We collect and store essential information such as the passenger's ID, name, credit card, and mileage plan number. To account for fluctuating prices, we must save the total cost at the time of booking as prices are subject to change. Every booking must be assigned to precisely one flight and be associated with at least one passenger. A newly introduced flight does not have any existing bookings.…
Draw a clear and complete ER
Create a database Entity and Relationship Diagram (ERD) for the following application (Submitted An image of the Diagram By using Any Application:The Application idea: It is a mobile application called (Khair) to help people. This assistance is moral, material. This assistance is also provided by good people in our community. Example to understand the Application idea more: For example, a person urgently needs a medical chair or bed and does not have the ability to purchase what he needs. The medical chair or bed is requested through the application, and whoever has what he requests initiates the request through the application’s messages and determines the meeting place. Application models (page): Login included: login registration login included: user name password New registration included: name E-mail Password phone number date National Identification Number Home page included: Request - applicant name - address - send message Messages list form included: list of users Messager…
1.. Design a database to keep track of information for an art museum. Assume that the following requirements were collected: The museum has a collection of art objects. Each art object has a unique identification, an artist (if known), a year (when it was created, if known), a title, an epoch (Renaissance, Modern, Ancient, etc.), and a description. The arts objects are classified in the museum in several ways as discussed below: Arts objects are categorized based on their type. The main types are: painting and sculpture, plus another type they called “other” to accommodate objects that do not fall into one of the two main types. A painting has a paint type (oil, watercolor, etc.), material on which it is draw on (paper, canvas, wood, etc.), and style (modern, abstract, impressionism, etc.). A sculpture has a material from which it was created (wood, stone, iron, etc.), height, weight, and style. An art object in the other category has a type (print, photo, etc.) and a style.…
Part Design a database for an Access Control System. The purpose of the system is to control who has access to which doors at what time. There are six entities in this database: ● ● Users Groups O A user can be assigned to more than one group. Doors AccessRules O Decides which Group has access to which Door at which TimeSchedule. Example: Group A can access the Front Door on Monday from 7am to 9pm. o o Example: Group B can access the Back Door on Saturday from 8am to 10pm. TimeSchedules To make it simple, we only need to pport Weekly Schedules. The TimeSchedules table has the following columns: Id O O DayOfWeek StartTime ■ EndTime o Example: a schedule with DayOfWeek-Monday, StartTime=7:00, EndTime=23:00 means this schedule grants access on Monday from 7am to 11pm. Entrance Logs O This table keeps a permanent record of which user accessed which door at what time. o The logs must remain valid even after the related records have been updated. For example, after user X is deleted, the…
ALO (Anderson - left - overs.) Enterprises is an organization that provides a wide variety of service offerings for clients. Service types available include bookkeeping, computer installation, computer repair, software installation, taxes, advertising, market surveys, etc. Each service engagement may involve multiple types of service and may include multiple employees. Each type of service has a standard hourly billing rate and can not be entered into the database unless at least one of ALQ's employees is capable of performing that type of service. Employees are trained to perform multiple types of services and can work on multiple service engagements. Employees earn a contracted annual salary based on their credentials, regardless of what services they actually end up performing. Clients are required to pay for a given service engagement in full ( with just one check) within two weeks of the completion date. It is possible for a client to pay for more than one service engagement with…
QUESTION 7 Consider the following database schema for University Library database. A student can borrow many books and a given book can be borrowed by any student if it is available in the library. For each borrowing, the borrowing and return dates are registered in the database. Student (SID: long, CPR:long (unique), Name:string, tel:number, major:String, gender:Character {"F' or M'}) Book (ISBN:long, Title:string (unique), Author:string) Borrowedltems(stSID:long, booklSBN:long, serialNo.int (unique), BorrowingDate:date, RetumDate:date) Write SQL statements to: 1. List ISBN, Title, Author of all books that include the word 'Database' in their titles in a descending order of ISBN. 2. List SID, Name, and Major of all female students doing major in 'CS' and their name starts with 'S'.
Please create an ER Diagram for the sports case study. I have also uploaded a sample ER Diagram so please take a look at that as well.
Doctors have id. name. date of birth. and specialty. Patients have id. name, and date of birth. and address. Medicines have name. patent number, and milligrams We want to build A database that keeps track of the medicines prescribed by a doctor to patients The prescription process happens in a hospital. (a) Draw a complete Entity-Relationship diagram for the description above. You must include all the details, such as keys, weak entities (if any). cardinality constraints., etc Your diagram must use n-ary relationships You must use arrow notation Your diagram must avoid redundancy.
Relations describe the intersection between two axes, x and y. For example, a table (tuple) found in a database contains columns (attributes) and rows (records or observations). Database and Geospatial Mapping Application developers rely on tables and cartesian coordinate systems to adhere to the rules of relational database theory so that integrity in the location is preserved. Tables should only contain records that relate to the columns found in that table and the data domain determines what records should be stored in a given table. Database administrators can check for integrity in relationships within and between tables using structured query language (SQL). What other computer-science or IT jobs rely on relations?
Database Design [Image below] Before essential oil products are marketed, testing is carried out based on the production batch of each essential oil. This is done to maintain the quality and content of the constituents in the essential oil. Where the Test Percentage Content must reach the Minimum Percentage Content standard for each constituent. If there is one type of constituent that does not meet the minimum standards, the batch will not be marketed because it does not meet the quality standard. 1. If recording the results of each testing process is still done manually, in your opinion, please explain which approach is suitable between Centralized and View Integration for collecting requirements. 2. What Fact Finding methods will you choose to obtain information related to the development of a database system to record the testing process, and explain the reasons for choosing it.