Your Perfect Assignment is Just a Click Away

We Write Custom Academic Papers

100% Original, Plagiarism Free, Customized to your instructions!

glass
pen
clip
papers
heaphones

Grantham University Wk 4 Q&A and Crow’s Foot E-R Diagrams Discussion

Grantham University Wk 4 Q&A and Crow’s Foot E-R Diagrams Discussion

Grantham University Wk 4 Q&A and Crow’s Foot E-R Diagrams Discussion
Question Description
Please include the questions with your answers. Answer in complete sentences where applicable.
Give an example of a data constraint and an example of a business rule. Be sure to label which is which so I can tell you know the difference.
Explain the difference between an entity class and an entity instance, and give an example other than those used in the text or the lectures.
Define the term “weak entity” and give an example other than those used in the text.
Define supertype, subtype and discriminator.
Explain the difference between and inclusive subtype relationship and an exclusive subtype relationship.
Using Microsoft Visio (available through Microsoft Azure Dev Tools) draw an IE Crow’s Foot E-R diagram for the entities DEPARTMENT and EMPLOYEE. A DEPARTMENT may have more than one EMPLOYEE, but an EMPLOYEE is only assigned to one DEPARTMENT. Assume that a DEPARTMENT does not need to have an EMPLOYEE, but that every EMPLOYEE is assigned to a DEPARTMENT. Include at least three appropriate identifiers and attributes for each entity.
Explain the following crow’s foot E-R diagram. Be sure to include entities, keys, attributes, cardinality. What is the special type of entity represented by COMMISSION_RATE?

“Place your order now for a similar assignment and have exceptional work written by our team of experts, guaranteeing you A results.”
Attachments
20190708044429week_4_assignment_database_application (42 kB)

Order Solution Now

Our Service Charter

1. Professional & Expert Writers: Homework Discussion only hires the best. Our writers are specially selected and recruited, after which they undergo further training to perfect their skills for specialization purposes. Moreover, our writers are holders of masters and Ph.D. degrees. They have impressive academic records, besides being native English speakers.

2. Top Quality Papers: Our customers are always guaranteed of papers that exceed their expectations. All our writers have +5 years of experience. This implies that all papers are written by individuals who are experts in their fields. In addition, the quality team reviews all the papers before sending them to the customers.

3. Plagiarism-Free Papers: All papers provided by Homework Discussion are written from scratch. Appropriate referencing and citation of key information are followed. Plagiarism checkers are used by the Quality assurance team and our editors just to double-check that there are no instances of plagiarism.

4. Timely Delivery: Time wasted is equivalent to a failed dedication and commitment. Homework Discussion is known for timely delivery of any pending customer orders. Customers are well informed of the progress of their papers to ensure they keep track of what the writer is providing before the final draft is sent for grading.

5. Affordable Prices: Our prices are fairly structured to fit in all groups. Any customer willing to place their assignments with us can do so at very affordable prices. In addition, our customers enjoy regular discounts and bonuses.

6. 24/7 Customer Support: At Homework Discussion, we have put in place a team of experts who answer to all customer inquiries promptly. The best part is the ever-availability of the team. Customers can make inquiries anytime.