Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask DBMS Expert


Home >> DBMS

Your final exam is based on the scenario below. Read the scenario and then answer the problems that follow it.

Metropolitan City Church Management:

Metropolitan City Church Management (MCCM) has hired you as a consultant to modernize the file processing system that stores information about churches, priests, church members, and attendance at church events.

The data that are currently stored in the file processing system are:

Church_Name                            Name of a church
Church_Address                        Address of a church
Church_Phone                          Church’s phone number
Priest_Name                             Name of a priest
Priest_Birthdate                        Priest’s birthday
Title                                       Priest’s title (rank)
Family_Number                         A unique identifier for a family
Family_Name                            Last name of a family that is a member of a church
First_Name_Head_of_Household   First name of a head-of-household
First_Name_Significant_Other      First name of the significant other of a head-of-household
First_Name_Child                       First name of a child
Birthdate_Child                         Birthdate of a child
Event_Date                              Date an event occurs
Event_Name                             Name of an event
Total_Attendance                     Number of people attending an event
Family_Attendnace                    Number of people from one family attending an event

Important note: One of the restrictions that have been placed on your work is that no further attributes can be added. You may not create any arbitrary unique keys that are not already present! Use concatenated keys where needed.

You are given the following facts about the situation:

• A church can have many priests assigned to it.
• A priest may be assigned to more than one church.
• A family belongs to only one church.
• A family has only one head-of-household; a head-of-household may have a significant other (spouse or other life partner). Of course, there may be more one than child in a family.
• An event is something that takes place on a specific date.
• A person can attend many events and (hopefully) an event is attended by many people.
• The church wants to know which families attended which events and how many people from each family were there. For ex, the database should store data indicating that four members of the Smith family attended the Crafts Fair. (It doesn’t matter which four members …)

problem 1: Draw an ER diagram for your database scenario.

The ER diagram should use only three relationships:

  • one to one relationship
  • one to many  relationship
  • many to many relationship

please go through visual paradigm for making ER diagram using those relationships itself.

problem 2: Design a set of 3NF tables for your database scenario.

problem 3: Consider the following query.

“Show me a list of the last names of all the families who attended the Holiday Bizzare on December 12, 2000.”

• Using the relations you created for the church database, prepare a SQL query that will answer the query above.
• Using the relations you created for the church database, prepare the relational algebra that will answer the query above.

problem 4: Consider the following query:

“Show me the name and birthdate of all priests not assigned to a church.”

• Using the relations you created for the church database, prepare a SQL query that will answer the query above.
• Using the relations you created for the church database, prepare the relational algebra that will answer the query above.

Answer the following problems. You may use exs to support your discussion, but those exs must not duplicate those presented in the lessons or in your text books.

problem 5: Uncontrolled concurrent use of a database can lead to serious problems. What are these problems? Why do they occur?

problem 6: Assume that you have been asked to look at the database design being used by an organization. When you see the tables, you realize that they are all in first normal form; none are higher. describe to the organization’s management the three types of problems you would expect to find in these relations.

problem 7: Discuss four major threats to database security. For each threat you identify, state at least one solution to that threat.

problem 8: Discuss the characteristics of an organization for which a data warehouse would be suitable. Aside from huge amounts of money, what resources does an organization need to support a data warehouse or data mart? For what purposes is a database warehouse best used?

DBMS, Programming

  • Category:- DBMS
  • Reference No.:- M94857

Have any Question? 


Related Questions in DBMS

Projectfalcor supplies is a distributor of high tech

Project Falcor Supplies is a distributor of high tech teaching equipment. Its primary target customers are schools in the region who purchase the teaching equipment for classrooms and online use. The company's main compe ...

The use of an access database has become very common over

The use of an Access database has become very common over the last 10 years. Access is the preferred desktop database because server databases such as structured query language (SQL) and others are too complex and are be ...

Data information decision please respond to the

"Data Information Decision" Please respond to the following: • With the obvious pace of current technology development, data continues to grow daily. Imagine that you are a Database Administrator for a large organization ...

Suppose that you are the database developer for a local

Suppose that you are the database developer for a local college. The Chief Information Officer (CIO) has asked you to provide a summary of normalizing database tables that the IT staff will use in the upcoming training s ...

Here is two assignment one is only summery of project from

Here is two assignment one is only summery of project from first assignment, in powerpoint. pleasedont copy and paste, it will be verified by software for plagiarism. please cite all sources by APA format. due date is 26 ...

Assignmentthis must be your own unique work you cannot have

Assignment THIS MUST BE YOUR OWN UNIQUE WORK: you cannot have the exact same table as another student and you cannot turn in something you find online!Your work will be checked against a plagiarism database. The format m ...

Select one of the four primary categories of terrorist

Select one of the four primary categories of terrorist hazards (Chemical, Biological, Radiological/Nuclear, Explosives). Provide a history of its use as a weapon of mass destruction (WMD); describe how it is made and dis ...

Virtualization fundamentalsunit 3 research projectwrite an

Virtualization Fundamentals Unit 3 Research Project Write an overview of *any two* of the following topics. Each overview should be between one half and one full page long. You should use a minimum of two sources for eac ...

Relational databases theory and practice assignmentanswer

Relational databases: theory and practice Assignment ANSWER ALL QUESTIONS Question 1 - Use the block notes to answer the following questions: i. Explain what is meant by the process of denormalization and how it is done. ...

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 ...

  • 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