Question

A company consists of departments and employees. A department has responsibility for zero, one or more...

A company consists of departments and employees. A department has responsibility for zero, one or more projects. A company has: name, address and telephone. A department has name. A project has name. An employee has name, address, a social security number (SSN) and is participating in zero, one or more projects.

Let the E-R diagram show: entities with attributes, relationships (with names) between the entities and cardinalities for the relationships.                               CR[15 Marks]

Transform the E-R model into Relational model.

Engineering   Computer-Science   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

If you have any questions comment down. Please don't simply downvote and leave. If you are satisfied with answer, please? upvote thanks

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Design an E-R diagram to model a college described below: ● There are several departments in...
Design an E-R diagram to model a college described below: ● There are several departments in a college, and each of them has a unique name, one or more telephone numbers, and an address. ● Each department gives some number of courses. Each course has a course number which can be used to identify a course only inside of the same department. Each course has its schedule and a certain number of credits. Each course is held in some location...
Consider the following description below: In a company, each employee belongs to one department. One of...
Consider the following description below: In a company, each employee belongs to one department. One of the employees of a department is the Head of Department. Each department occupies one or more offices. An office can be occupied by no department or by one department. An employee is identified by an id and has a name. A department is identified by its name. An office is identified by its office number. Draw a class diagram for the above scenario to...
1.Consider the following (normalized) relational model (primary keys are underlined, foreign keys are in italics). EMPLOYEE(SSN,...
1.Consider the following (normalized) relational model (primary keys are underlined, foreign keys are in italics). EMPLOYEE(SSN, ENAME, EADDRESS, SEX, DATE_OF_BIRTH, SUPERVISOR, DNR) S U P E R V I S O R : foreign key refers to SSN in EMPLOYEE, NULL value allowed D N R : foreign key refers to DNR in DEPARTMENT, NULL value not allowed DEPARTMENT(DNR, DNAME, DLOCATION, MGNR) MGNR: foreign key refers to SSN in EMPLOYEE, NULL value not allowed PROJECT(PNR, PNAME, PDURATION, DNR) DNR: foreign...
Create a relational model and ER diagram based on the following info. Emerald Realty Group, Inc....
Create a relational model and ER diagram based on the following info. Emerald Realty Group, Inc. is a local real estate company that is specialized in leasing office space to businesses. The company does not own all the properties it leases. The company has its own suppliers and customers. We refer to the person or the company that owns the office space as a supplier. A customer is the person or the company that rents the office space. Emerald Realty...
A certain airport authority wants to organize some of the data associated with the airport. The...
A certain airport authority wants to organize some of the data associated with the airport. The relevant information is as follows: Every airplane has a registration number and each airplane is of a specific model The airport accommodates a number of airplane models and each model is identified by a model number and has a capacity and weight Each airplane has an owner identified by name and contact phone number. A number of technicians work at the airport. You need...
Consider a relational DBMS that has two relations: Emp (employees) and Dept (departments).    Emp(id, name,...
Consider a relational DBMS that has two relations: Emp (employees) and Dept (departments).    Emp(id, name, age, salary, dname)    Dept(dname, location) - The Emp table has 500 tuples, and each tuple has a fixed length of 500 bytes. The primary key attribute "id" has a length of 40 bytes. - The Dept table has 100 tuples, and each tuple has 200 bytes. The primary key attribute "dname" has a length of 20 bytes. For simplicity, we assume each employee...
Directions: Develop an E-R (or EER depending upon need) Diagram. List all assumptions. Show the version...
Directions: Develop an E-R (or EER depending upon need) Diagram. List all assumptions. Show the version 1 (entities and data only) and version 3 (entities, attributes and relationships with cardinalities and participation constraints). 20 points of the grade will be based on evaluating your assumptions - you must give a detailed list of your assumptions identifying anchor concepts, data associated with the anchor and data that has more than one anchor participating in it. Remember, we are not talking out...
Prevosti Farms and Sugarhouse pays its employees according to their job classification. The following employees make...
Prevosti Farms and Sugarhouse pays its employees according to their job classification. The following employees make up Sugarhouse's staff: Employee Number Name and Address Payroll information A-Mille Thomas Millen Hire Date: 2-1-2019 1022 Forest School Rd DOB: 12-16-1982 Woodstock, VT 05001 Position: Production Manager 802-478-5055 PT/FT: FT, exempt SSN: 031-11-3456 No. of Exemptions: 4 401(k) deduction: 3% M/S: M Pay Rate: $35,000/year A-Towle Avery Towle Hire Date: 2-1-2019 4011 Route 100 DOB: 7-14-1991 Plymouth, VT 05102 Position: Production Worker 802-967-5873...
A trucking company has many different trucks and many different drivers. For a given delivery trip,...
A trucking company has many different trucks and many different drivers. For a given delivery trip, trucks are assigned to drivers. As time passes, a driver will make trips with many different trucks and any given truck will be driven by many different drivers. The following tables contain the data for the firm's Driver population and for the firm's population of Trucks. DRIVER EMP_NUM EMP_TITLE EMP_LNAME EMP_FNAME EMP_INITIAL EMP_DOB EMP_HIRE_DATE 100 Mr. Kolmycz        George    D 6/15/42 3/15/85 101 Ms. Lewis         ...
Following is the whole proposal and for that I need a logical design (ERD), Q. Map...
Following is the whole proposal and for that I need a logical design (ERD), Q. Map all different types of entities and relationships, provide definitions of entities and relationships. Zameen.com is Pakistan's first and biggest property portal and is amongst the world's top five property portals. It was founded in 2006 and has since revolutionized Pakistan's real estate industry by linking online buyers and sellers in a very convenient way, making it a worldwide household name among Pakistanis. This is...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT