fbpx

Normalized Database Design | Online Assignment Help

Don't use plagiarized sources. Get Your Assignment on
Normalized Database Design | Online Assignment Help
Just from $13/Page
Order Now

Instructions:

Read the business scenario on page 3. The scenario is communicated in the form of an order form from Brewton Enterprises, Inc.

Create an ERD that represents the data and data relationships associated with the business scenario. Strongly consider sketching a first draft of the ERD on paper first; following the instructions that begin with step 3 below to normalize the design; making any necessary changes to your on-paper ERD; and then creating your final ERD in a software application such as Microsoft® Visio®, Lucidchart, Microsoft® PowerPoint®, or another software tool of your choice.

Fill out the normalization table on page 4.

a. Begin by defining un-normalized form (UNF).

i. Consider all of the nouns that appear in the business scenario. Decide which of these nouns should be fields in the database you will be designing. What nouns need to be identified, stored, and tracked in this particular business scenario? The nouns you identify are what you will list in the UNF column. The nouns you list in this column are all the potential field names you are considering to include in the yet-to-be-identified entity/entities.

For example, in an educational scenario, some things (nouns) that typically need to be identified/stored/tracked include student name, student ID, student standing, all of the classes a student takes, all of the teachers that teach the classes, and so on.

ii. In the UNF column, designate any field names that seem to uniquely identify a person, place, or thing (noun) by typing an asterisk next to that field name. These are your potential keys. ID numbers (such as student IDs, order IDs, and social security numbers) that are unique to a specific individual, transaction, or other noun make good keys.

· For example, field names that can hold the same value in different situations (such as “John Smith” or “freshman”) are not unique and therefore not suitable for keys.

iii. Also in the UNF column, designate any field names that seem to represent repeating values. Use a closing parenthesis “)” to designate repeating values.

· For example, students typically take many classes, so in an educational scenario where “student ID” is a key, “class name” is an example of a repeating value. Because one customer can place many orders, in a business scenario where “customer ID” is a key, “order” is an example of a repeating value.

iv. Also in the UNF column, for any group of repeating values you have identified (the values you marked with a parenthesis), identify the key, or unique identifier, for that group of repeating values. Type an asterisk next to the key associated with each group of repeating values.

· For example, in an educational setting that has repeating values of “class name,” “class ID,” and “class instructor,” “class ID” would be a suitable unique identifier/key. In a business scenario that has repeating values of “order,” “order ID” would be a suitable unique identifier/key.

b. Apply the first normal form rule. 1NF states that each group of related field names should have a unique identifier (primary key), and each field name should represent one and only one value and contain no repeating groups. The result of applying 1NF to the field names in the UNF column will be a grouping of related fields and a repetition of one or more keys.

· For example, you may find you will move all of the fields designated with a parenthesis in the UNF column to the 1NF column and then repeat the key in both columns. The key you repeat will be considered the primary key in the UNF column and the foreign key in the 1NF column. In an educational scenario, you might retain the primary key “class ID” in the UNF column; move all of the fields marked with a parenthesis that have to do with classes to the 1NF column; and repeat the “class ID” field in the 1NF column. This repetition allows you to “match” the value of a primary key to the value of a foreign key and relate the eventual data groups/entities/tables.

c. Apply the second normal form rule. 2NF states that any non-key field must be dependent on the entire primary key. Conceptually, this means that any non-key field must be able to be located uniquely, based on concatenated or compound keys if necessary. The result of applying 2NF to the field names in the 1NF column is typically groups split apart into smaller groups with additional (and repeated) keys.

d. Apply the second normal form rule. 2NF states that any non-key field must be dependent on the entire primary key. Conceptually, this means that any non-key field must be able to be located uniquely, based on concatenated or compound keys if necessary. The result of applying 2NF to the field names in the 1NF column is typically groups split apart into smaller groups with additional (and repeated) keys.

e. Identify sensible entity names for each group of fields. The result of applying this last step to the groups of related field names in the 3NF column is one entity name listed in the Entity Name field for each group.

· For example, if the 3NF column contains groups of fields related to customers, orders, and sales reps, sensible entity names may be Customer, Order, and Sales Representative, respectively. If the 3NF column contains groups of fields related to students, classes, and teachers, sensible entity names might be Student, Class, and Teacher. Because each entity will eventually be implemented as a relational table, take a moment at this point to double-check that each group in the 3NF form that corresponds to an entity name (that is, each eventual table) contains one primary key. If tables are related, they must have a second foreign key that matches the primary key of the table(s) to which they relate

Brewton Enterprises, Inc. Order Form

Order number: 1234

Order Date: 5/12/18

Customer number: 9876

Customer name: John Doe

Customer address: 456 Bishop Street Honolulu, Hawaii 96813

Tel: (808) 8650990

Sales agent: Lloyd Johnson

Sales agent number: S99

Product No. Description Quantity Unit Price

Normalization of Brewton Enterprises, Inc. Order Form (Brewton Business Scenario)

Please follow and like us:
error20
Tweet 176
fb-share-icon92

Calculate your paper price
Pages (550 words)
Approximate price: -

Why Choose Us

Quality Papers

At Myhomeworkwriters.com, we always aim at 100% customer satisfaction. As such, we never compromise the quality of our essay services. Our essay helpers ensure that they craft each paper carefully to match the requirements in the instruction form.

Professional Academic Writers

With Myhomeworkwriters.com, every student is guaranteed high-quality, professionally written papers. We ensure that we hire individuals with high academic qualifications who can maintain our quality policy. These writers undergo further training to sharpen their writing skills, making them more competent in writing academic papers.

Affordable Prices

Our company maintains a fair pricing system for all paper writing services to ensure affordability. Our pricing system generates quotations based on the properties of individual papers.

On-Time delivery

MyHomeworkWriters guarantees all students of swift delivery of papers. We understand that time is an essential factor in the academic world. Therefore, we ensure that we deliver the paper on or before the agreed date to give students ample time for reviewing.

100% Originality

Myhomeworkwriters.com maintains a zero-plagiarism policy. As such, MyHomeworkWriters ensure that they use the students’ instructions to deliver plagiarism-free papers. We are very keen on avoiding any chance of similarities with previous papers.

Customer Support 24/7

Our customer support works around the clock to provide students with assistance or guidance at any time of the day. Students can always communicate with us through our live chat system or our email and receive instant responses. Feel free to contact us via the Chat window or support email: support@myhomeworkwriters.com.

Try it now!

Calculate the price of your order

You will get a personal manager and a discount.
We'll send you the first draft for approval by at
Total price:
$0.00

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Samples

Our writers complete papers strictly according to your instructions and needs, no matter what university, college, or high school you study in.

Categories
All samples
Analysis (any type)
Argumentative essays
Dissertation/Dissertation chapter
Analysis (any type)
Advantages and disadvantages of lowering the voting age to thirteen
Undergrad. (yrs 1-2)
Political science
4
View this sample
Argumentative essays
Is euthanasia ethical or not?
Undergrad. (yrs 3-4)
Nursing
3
View this sample
Dissertation/Dissertation chapter
Videoconferencing as a teaching tool
Undergrad. (yrs 3-4)
Education
10
View this sample

Our Essay Writing Services

MyHomeworkWriters holds a reputation for being a platform that provides high-quality academic services. All you need to do is provide us with all the necessary requirements and wait for quality results.

Essays

Essay Writing Services

At MyHomeworkWriters, we have highly qualified academic gurus who will offer great assistance towards completing your essays. Our essay help service providers are well-versed with all the aspects of developing high-quality and relevant essays.

Admissions

Admission and Business Papers

With Myhomeworkwriters.com, we will help you secure a position at your desired institution. Our essay writing services include the crafting of admissions papers. We will still help you climb your career ladder by helping you write the official papers that will help you secure a job. We will guide you on how to write an outstanding portfolio or resume.

Editing

Editing and Proofreading

Myhomeworkwriters.com has a professional editorial team that will help you organize your paper, paraphrase it, and eliminate any possible mistakes. Also, we will help you check on plagiarism to ensure that your final paper posses quality and originality.

Coursework

Technical papers

My Homework Writers harbors professional academic writers from diverse academic disciplines. As such, we can develop essay help services in all academic areas. The simplicity or complexity of the paper does not affect the quality of essay writing services.

Sitemap: https://myhomeworkwriters.com/sitemaps/sitemap.xml User-agent: * Allow: / User-agent: AhrefsBot Crawl-Delay: 1 User-agent: SemrushBot Crawl-Delay: 1
Social media & sharing icons powered by UltimatelySocial