Question: I need to prepare an Entity Relationship Diagram (ERD) based upon the following business case using the simplified design drawing technique discussed shown below. :

I need to prepare an Entity Relationship Diagram (ERD) based upon the following business case using the simplified design drawing technique discussed shown below. :

A cable television company desires a database containing data on its customers, services offered, and equipment.

The following data items are needed: Customer name, address, telephone number, account number Service provided (basic, movie channel A, movie channel B, movie channel C, childrens channel)

The charge for each service

Description and cost of various equipment types used by the company.

Equipment used at the customer site that belongs to the cable company (decoder, remote control, etc.)

An identifying number for each piece of equipment

An extra charge (if applicable) for any equipment used by the customer

Business Rules:

A customer may have more than one account, but an account may have only one customer.

Each account may utilize more than one service.

A site may have more than one account.

Equipment is linked to the account and not the site.

I need to prepare an Entity Relationship Diagram (ERD) based upon the

Deliverables: 1. A single Google Doc, Google Slide, or Lucid Chart containing an ER Diagram with entities, associations, & cardinalities for the business case

Simplified ER Diagram Symbols Entity:a nectamgle with the name of the entity inside Entity Name Association: a ine connecting the related entities with the type of association indicated aboveland or below the line Supplies Supplied Cardinality: a nur toer or the symbo M1located next to the entity vv heree the associatiorn coornnects. Mreprese nts Many Example: 1 Supplies Supplied Vendor Product

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!