CMIS320 Project 2-4 assignments

CMIS 320 Project 2

This assignment allows students to demonstrate their skills in the area of designing relational databases to satisfy specific business rules and requirements. The deliverables for this assignment include an Entity Relationship Diagram and detailed documentation describing the database design and structure.

In this assignment you will be provided with a description of an application (below) to create an entity-relationship diagram (ERD) and design accompanying table layout using sound relational modeling concepts and practices. The relationships between the entities and the attributes for the entities will be identified and described. This database will provide the foundation for the follow-on assignment. The following paragraphs provide the background and summary of the business requirements.

You are a database consultant with Ace Software, Inc. and have been assigned to develop a database for the Mom and Pop Johnson video store in town. Mom and Pop have been keeping their records of videos and DVDs purchased from distributors and rented to customers in stacks of invoices and piles of rental forms for years. They have finally decided to automate their record keeping with a relational database.

You sit down with Mom and Pop to discuss their business, and watch their operation for about a week. You discover quickly that a video and a DVD are both copies of a movie kept in a separate plastic case that is rented out. They have several copies of each movie they rent; therefore there are several videos and DVDs for each movie title. You learn that in their inventory they have several thousand videos and DVDs, which they get wholesale from about a half dozen distributors. The video and DVD prices to them are based on the quantity of their shipment and the past business they have done with each company.

The price of a DVD for a movie might be different than the price of a video for the same movie, even from the same distributor. Each distributor provides different types of movies (e.g., suspense, horror, mystery, comedy, etc.). A single distributor may provide several different types of movies in both video and DVD format. It is possible to obtain the same movie from multiple distributors, and at different wholesale prices.

Each video and DVD has a unique identification number that Mom and Pop assign in their inventory, in addition to the distributor’s serial number for the item. Each movie also has a unique identification number Mom and Pop assign in addition to the title, and any movie IDs the distributors use in their electronic catalogs. Distributors provide electronic catalogs to Mom and Pop and the information from these catalogs must be included in the database.

Mom and Pop need to record when a video or DVD is rented, when a video or DVD is returned, and all customer charges such as late and damaged fees, failure to rewind fees, and taxes. They need a report of which videos are returned late because there are standard and late charges. On occasion there are discount prices for certain movies or types of movies. Customers want to rent movies based on actors or actresses, running length, type of movie, rating, year released, the director, and the academy awards won (by the movie, the actors, the actresses and/or the directors). Customers also want to know how many videos they have rented in the last month, year, and so forth. Mom and Pop need to keep only basic information on customers in their database, such as name, address, telephone numbers, etc.

There must be no limit to the number of video and/or DVD copies of a movie that Mom and Pop can have in their inventory. Video/DVD ID numbers, movie ID numbers, and distributor ID numbers for videos, DVDs, and movies are all different. Also, each movie must be able to have an unlimited number of actors, actresses, directors, and academy awards (i.e., Oscars). Other types of awards (e.g., Golden Globe, People’s Choice, etc.) are not of interest for this application. The rental of equipment, sale of videos, DVDs, popcorn, etc., is not to be kept in the database.

Using this information, you should:

1) Determine and list your entities. Then create relationship sentence pairs between those entities that are related. You should not have any many-to-many relationships.

2) Create an entity/relationship diagram (ERD) showing all your entities, attributes, and relationships. Sketch your ERD by hand or use a drawing program. Your diagram must be on a single page. All entities should be related to at least one other entity. Your ERD should have all one-to-many relationships and not have any many-to-many relationships.

3) Create metadata that describes the table created from each entity and the column created from each attribute in the ERD. Particular attention will be given to the proper specification of

all primary key (via “PK”) and foreign key (via “FK”) columns in the table layouts. These should match your ERD exactly.

Submit everything for the above steps in a single Word or PDF file to the LEO assignment link. Make sure your work is neat and legible and your steps are in order.

Grading rubric

CMIS 320 Project 3

In this assignment you will perform the physical design and implementation using SQL Data Definition Language (DDL) and proceed with populating the Mom and Pop Johnson Video Store database via Data Manipulation Language (DML) SQL commands.

For each of the steps below you may create a separate SQL script file and SPOOL file or you may want to put the SPOOL output for several steps, from the same SQL script file, in the same file. Be sure your SPOOL file(s) contains your SQL statements along with the Oracle responses and/or displayed results. Do NOT submit your SQL script files. Only submit your output SPOOL files.

Assignment Details:

1) Create Oracle database tablesusing SQL Data Definition Language (DDL) for each table listedin the metadata of Assignment 1. You may need to use a combination of DROP TABLE, CREATE TABLE, and ALTER TABLE SQL statements. Make sure that entity and referential integrity are enforced by declaring a primary key for each table (these may be composite keys) and declaring all appropriate foreign keys. Your CREATE TABLE and ALTER TABLE statements (if desired) must show integrity constraints, as appropriate, for NOT NULL, UNIQUE, PRIMARY KEY, FOREIGN KEY, REFERENCES, and CHECK constraints. Be sure to save your SQL script file used to create these tables with a .sql extension and your output SPOOL file with a

.lst or .txt extension. You should rerun and test your SQL script file until it runs without any errors

(this is why you’ll want to include DROP TABLE statements). Submit your SPOOL file showing that all SQL in your SQL script file worked properly.

2) Populate each of your tables with at least five valid rows of data each and show the SQL INSERT statements as you executed them. Populate other tables in your database, as necessary, to satisfy referential integrity. Save your SQL script file and SPOOL file with the correct extensions. You should test and rerun your SQL script file until it runs without any error. Submit your SPOOL file showing that all SQL in your SQL script file worked properly.

3) Develop an SQL script file to perform the following queries and updates. You should test your SQL script file until it runs without any errors.

o Retrieve all of your customers’ names, account numbers, and addresses (street and zip code only), sorted by account number.

o Retrieve all of the videos rented in the last 30 days and sort in chronological rental date order.

o Produce a list of your distributors and all their information sorted in order by company

name.

o Update a customer name to change their maiden name to a married name. You can choose which row to update. Make sure that you use the primary key column in your WHERE clause to affect only a specific row. You may want to include a ROLLBACK

statement to undo your data update.

o Delete a customer from the database. You can choose which row to delete. Make sure that you use the primary key column in your WHERE clause to affect only a specific row. You may want to include a ROLLBACK statement to undo your data deletion.

Submit your SPOOL file(s) showing that all SQL in your SQL script file worked properly. Show the actual SQL statements executed and the results the SQL produced below the code by making sure that you have a SET ECHO STATEMENT in your SQL script file(s).

Do NOT submit your .sql SQL script files.

Grading rubric

CMIS 320 Project 4

Examine the following relation and its attributes and answer the following questions. Assume these are the values for “all time”. Assume girls with the same name are the same person.

1) Is this relation in at least 1NF? Why or why not?

2) What is the primary key of the initial relation (assume the values shown are the only possible tuples for all time)? Remember that a primary key must be unique and not null.

3) Describe the specific data anomalies that exist if we DELETE the tuple containing Jacqueline.

4) Draw a functional dependency diagram for the initial relation. This diagram should agree with the primary key you selected in above.

5) Based on your diagram, what normal form is the initial relation in? Why?

6) If necessary, decompose the initial relation into a set of non-loss 3NF relations by showing the relations, attributes, and tuples. Show complete relations with attribute headings and all data values in the tuples of your relations. Determine the number of 3NF relations you end up with after normalization, write this number, and then circle the number.

Grading rubric

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