Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask DBMS Expert


Home >> DBMS

problem 1: New England University maintains a data warehouse that stores information about students, courses, and instructors. Members of the university’s Board of Trustees are very much interested in students’ academic performance as well as instructors’ teaching effectiveness. For ex, they may like to know:

• The average grades for different courses taught by different instructors.

• The grade distribution for a particular course in a particular semester (e.g., a newly offered MBA course).

• The average ratings of teaching effectiveness for instructors at different ranks (e.g., Lecturer, Assistant Professor, Full Professor, etc.).

• The correlation between students’ grades and their ratings for instructors’ teaching effectiveness.

Note that each undergraduate student must declare his/her major and up to two minors by the end of the junior year. A graduate student may have a major (e.g., MBA) and a minor or concentration (e.g., IT).  Some courses (e.g., undergraduate GB courses) may be “co-offered” by several departments. An instructor may be affiliated with more than one department.

A) Draw the two star schemas and specify all relevant attributes.

B) Identify conformed dimensions.

C) Identify any slowly changing dimensions and the attributes whose values may change from time to time.

D) Draw a lattice hierarchy for each dimension that has more than one level.

problem 2: An automobile manufacturer needs to build a data warehouse to store and analyze data about repairs of vehicles. Among other information, the date of repair, properties of the vehicle (e.g. model), information about the specific repair case (e.g. costs, number of garage employees involved, duration of the repair), data about the garage doing the repair, and data about the customer who owns the vehicle are stored.

Typical exs of business intelligence problems are:

• What are the average total repair costs per month for garages in Boston by type of garage during the year 2011?

• Identify five vehicle types that had the lowest average part costs.

• Which factors (e.g., vehicle’s age, mileage, model; customer’s gender, age) contribute most to the repair costs?

The operational database keeps track of the repair costs (broken down by part costs, wages and total)for a specific vehicle (owned by a customer) for a specific garage on a dailybasis.

A) Draw a star schema for this data warehouse and specify all relevant attributes.

B) Identify any candidates for conformed dimensions that may be shared with other schemas (e.g., sales).

C) Identify any slowly changing dimensions and the attributes whose values may change from time to time.

D) Draw a lattice hierarchy for each dimension that has more than one level.

DBMS, Programming

  • Category:- DBMS
  • Reference No.:- M91742

Have any Question? 


Related Questions in DBMS

Database illustrationwritting from scratchdirections be

Database Illustration Writting from scratch. Directions: Be sure to make an electronic copy of your answer before submitting it to Ashworth College for grading. Unless otherwise stated, answer in complete sentences, and ...

Project guidelinesoverviewthe final project for this course

Project Guidelines Overview The final project for this course is the creation of a database proposal and implementation plan report that will address the needs of a given scenario. The purpose of this assessment is to as ...

Application creating and populating a databasesuppose you

Application: Creating and Populating a Database Suppose you have a small retail store and decide to create a database to track sales. You have information about recent sales that you want to use for testing the database. ...

Systems and database design assignment database design amp

Systems and Database Design Assignment: Database Design & Implementation (Airline) The assignment consists of two tasks. The first task, Database Design, requires a word processed document in PDF format detailing the des ...

Database management systems assignment-overview-for this

Database Management Systems Assignment- Overview- For this assignment you will implement and query a database from a supplied ER Diagram and Schema.  You will be required to write the SQL statements to create the databas ...

Stored procedures and stored functions - major assessment

Stored Procedures and Stored Functions - Major Assessment Task Background You are to create tables to store product and customer data. You will create a number of stored procedures and functions (SPFs) to insert / update ...

Your assignment should be submitted in a single word doc

Your assignment should be submitted in a single Word doc (.doc or .docx). It should include your scenario diagram for Problem 1, and your Ruby source code for Problems 2 and 3. Contact me or post to our discussion board ...

Upload your final project code and your presentation upload

Upload your final project code and your presentation. Upload all of your code in one large text file that has the .sql extension. Be sure to identify each section of code so that the reader will know what it does. All co ...

Databaseplease read carefully and if u sure u can do it

Database Please read carefully, and if u sure u can do it email me., please Design a database (entity and relationship tables in Access) for a small college department library. You should have the entities and relationsh ...

To prepare for the discussion read the article bridging the

To prepare for the discussion, read the article "Bridging the Gap: The Difference Between Data Analysis and Data Modeling." in the Module Resources folder on data manipulation. Next view the Power Point presentation "Dat ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

A cola-dispensing machine is set to dispense 9 ounces of

A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf

What is marketingbullwhat is marketing think back to your

What is Marketing? • "What is marketing"? Think back to your impressions before you started this class versus how you

Question -your client david smith runs a small it

QUESTION - Your client, David Smith runs a small IT consulting business specialising in computer software and techno

Inspection of a random sample of 22 aircraft showed that 15

Inspection of a random sample of 22 aircraft showed that 15 needed repairs to fix a wiring problem that might compromise

Effective hrmquestionhow can an effective hrm system help

Effective HRM Question How can an effective HRM system help facilitate the achievement of an organization's strate