Expanded entity relationship model diagram

Assignment Help Database Management System
Reference no: EM13189287

You must have at least these entities: REGION, FACTORY, EMPLOYEE, DEPARTMENT, TRAINING CLASS. You should use the attributes shown below.
(1) You are to design an Expanded Entity Relationship Model Diagram. An example of the Expanded Entity Relationship Model Diagram is seen in Figure 3.27 on page 89.
(2)You are to draw a relational diagram with attributes shown. See examples of relational diagrams with attributes. See figure 3.28 and figure 3.30. Be sure to indicate the primary and foreign keys in each design.

Also, be sure to indicate whether there is a 1:1, 1:M, M:1, or M:N relationship between the tables.
(3) Use the following information for this problem.

The Southern Widgets Corporation has many regions and operates many factories.

Each factory is located in a region, and each region can be home to many Southern Widgets Corporation's factories.

Each of the factories is composed of many departments.

Each department has many employees assigned to it, but each employee works for only one department at one of the factories. An employee cannot work at more than one factory at a time.

An employee may have completed no training class, one training class, or several training classes. Each training class can be taken by several employees.

The data to be stored for each of the entities is as follows:

Region -- region code, region name, region manager

Factory -- factory number, factory name, region number

Employee - employee number, employee name, job description, date of birth, department number

Department - department code, department name, manager number, factory number

Training class -- class number, class description, date of class, cost of class, instructor

Region number and region code are referring to the same information

At the start or end of each attribute name, include your initials.

Reference no: EM13189287

Questions Cloud

Segmentation criteria would you use to segment this market : What segmentation criteria would you use to segment this market? Of the segments you included in your answer above, select one as your target market and describe it in detail. Why did you select it?
How many firms must there be for the cournot equilibrium : Suppose there is a boombox market that has the following demand curve: P=400-20Q and there are N firms, each with a marginal cost of 30. How many firms must there be for the cournot equilibrium price to go below 40
What is the angle of elevation : Sears Tower is 1353 ft tall, as you walk 210 ft from building, look back at the top, what is the angle of elevation?
How much would square yard products total income : in producing Division 3's product are currently purchased from outside suppliers at a cost of $5 per unit. However, the same materials are available from Division 6. Division 6 has unused capacity and can produce the materials needed by Divisi..
Expanded entity relationship model diagram : Each department has many employees assigned to it, but each employee works for only one department at one of the factories. An employee cannot work at more than one factory at a time.
Find the rate of change of the distance : A baseball diamond is a square 90 feet on a side. A player is running from second base to third base at the rate of 15 feet per second. Find the rate of change of the distance from the player to home plate at the instant the player is 10 feet from..
At what rate must in increase the money supply : Additionally, due to innovations in the financial system, the velocity of money is rising at 2% per year. If the Fed wants to maintain a zero-inflation monetary policy, at what rate must in increase the money supply What if they want to keep infla..
How many bags of seed are needed : a rectangular plot of land is to be seeded with grass. If the plot i 12m X 18m and a 1 kg bag of seed is needed for 85m squared of land, how many bags of seed are needed.
Characteristic of a realigning election : All of the following are characteristic of a realigning election except

Reviews

Write a Review

Database Management System Questions & Answers

  Assume that a student table in a university

Assume that a student table in a university database has an index on StudentID (the primary key). and additional indexes on Major, Age, Marital status, and HomeZipCode.

  Computing functional dependencies

Compute the functional dependencies which exist in following table. After determining the functional dependencies, transform this table to an equivalent collection of the tables which are in third normal form.

  Design a set of 3nf tables for your database scenario

Draw an ER diagram for your database scenario. Design a set of 3NF tables for your database scenario.

  Determine airports with late flights to toronto-database

Determine airports with late flights to Toronto on a big plane. "Late" means departing after 9:00pm; "big" means with capacity 150 passengers or more

  Why triggers are significant in database systems

What are triggers used for, and why are they significant in database systems? Give an example of situation where a trigger would be appropriate. What would implementation of this trigger look like?

  Knowledge and data warehousing

Design a dimensional model for analysing Purchases for Adventure Works Cycles and implement it as cubes using SQL Server Analysis Services. The AdventureWorks OLTP sample database is the data source for you BI analysis.

  Write select statement which returns three columns

Write a SELECT statement which returns three columns: VendorName, InvoiceCount, and InvoiceSum. InvoiceCount is the count of the number of invoices, and InvoiceSum is the sum of the InvoiceTotal column.

  List different entities-objects-logical processes-data flows

List the different entities or objects, logical processes, data flows, and data stores that are involved, starting from the time you submitted your time sheet.

  How referential integrity constraint prevent data

In physical database design, referential integrity constraints can be defined. What actions does referential integrity constraint prevent from happening when data is inserted in table which contains this constraint?

  What functional dependencies can you identify

Suppose you have a relation schema about teaching classes that has the following attributes: Class, Instructor, Time and Room - based on your understanding of this scenario, what functional dependencies can you identify that hold on this relation?

  Design a database for an insurance company

Don't forget to underline key attributes for entity sets and include arrowheads indicating the multiplicity of relationships

  Find average number of books borrowed per member

Find the average number of books borrowed per member. Take into account that if a member does not borrow any books, then that member does not appear in the borrowed relation at all.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd