Your Perfect Assignment is Just a Click Away

Starting at $8.00 per Page

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


Draw an ERD for an eyeglass store database with the following information:

Draw an ERD for an eyeglass store database with the following information:

Draw an ERD for an eyeglass store database with the following information:
a. Customers have prescriptions from eye doctors.
b. Customers buy frames that come from manufacturers
c. Customers are helped by a staff member

Your Entity Relationship Diagram (ERD) posted for this discussion is NOT to be submitted as an attachment that everyone would have to open to read. Your ERD is to be copied and pasted.

You are to draw one ERD that includes all of the above relationships. Do NOT show the attributes for each entity.  Make sure that your relationships shows the cardinality for both directions (active and passive).  Use Crows Foot Notation. Name the relationships. There should be a minimum and maximum cardinality for each direction of each relationship.

Below are some guidelines you should use when drawing ERDs

An Entity Relationship Diagram (ERD) is a data model while Data Flow Diagrams (DFDs) are process models.

When drawing an ERD:

  • Each entity is to be named with a noun
  • The ERD shows the relationships between the entities.  The relationship is to be a verb.
  • Each entity has attributes (fields).  Attributes are the columns in regard to relational databases.  For the ERD you will draw in Discussion No 7 do not include the fields/attributes.

The ERD below states:

  • Reading the ERD in the active voice (top to bottom) – Person walks Dogs. Reading the ERD in the passive voice (bottom to top )- it states that dogs are walked by people.
  • Note the cardinality symbols.  They are in Crows Foot Notation, which is what we will use in this class – Discussion No 7 ERD.
  • The ERD states (reading top to bottom) PEOPLE walk one and only one dog (active).  Reading bottom to top (passive) – Dogs are walked by zero to many people.


"Place your order now for a similar assignment and have exceptional work written by our team of experts, guaranteeing you A results."

Order Solution Now

Our Service Charter

1. Professional & Expert Writers: Ace Papers 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 Ace Papers 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. Ace Papers is known for the 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 Ace Papers, we have put in place a team of experts who answer all customer inquiries promptly. The best part is the ever-availability of the team. Customers can make inquiries anytime.