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

Listed the five important software components of a dbms the

Listed the five important software components of a DBMS: the DBMS engine, the data definition, data manipulation, application generation, and data administration subsystems. Which of those are most and least important to ...

Question 1use the tables below to answer the following

Question 1: Use the tables below to answer the following questions: customerid customerid firstname lastname city state 10101 John Gray Lynden Washington 10298 Leroy Brown Pinetop Arizona 10299 Elroy Keller Snoqualmie Wa ...

Database analysis and designimplement the initial database

Database Analysis and Design Implement the initial database design for the Enterprise Resource Planning conceptual model described by the following requirements in your selected RDBMS. You need to create the Entity-Relat ...

Warehouse management system projectproject deliverablesthe

Warehouse management system project Project Deliverables The project requires students to perform three phases: (a) requirements analysis, (b) system and database design, and (c) a project plan. Note that in the phase 3, ...

Assignmentdeliverablesall files are located in the

Assignment Deliverables All files are located in the subdirectory of the project. The project should function as specified: When you visit the Personnel form page (frmPersonnel.aspx), a record should be saved in the tblU ...

Assignment advanced relational databaseproject- advance

Assignment: Advanced Relational Database PROJECT- Advance SQL Overview: Using the knowledge garnered thus far, please solve all of the below problems. Please run the attached SQL script file at the SQL*PLUS prompt. This ...

Enterprisebim projectgoal - to enable students to

Enterprise/BIM Project Goal - To enable students to experience the process of building a non-trivial database-backed web application. Tasks 1. Choose any area that interests you - this does not necessarily have to be abo ...

Assignment database environment proposalas one of the

Assignment: Database Environment Proposal As one of the program outcomes for the Bachelor of Science in Information Technology program, students must design and develop a database using professional principles and standa ...

Assignment database modeling and normalizationimagine that

Assignment: Database Modeling and Normalization Imagine that you work for a consulting firm that offers information technology and database services. Part of its core services is to optimize and offer streamline solution ...

Describe a dbms and its functions list at minimum three of

Describe a DBMS and its functions. List, at minimum, three of the popular DBMS products and give a brief description of each. Your response should be at least 200 words in length. Explain what mobile devices are and why ...

  • 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

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro