Question: What are ERDs and how are they used?

What are ERDs and how are they used?

Step by Step Solution

★★★★★

3.39 Rating (155 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock

Entityrelationship diagrams ERDs are graphical representations o... View full answer

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 Systems Analysis And Design 12th Questions!

Q:

What are daily price limits and how are they used by futures exchanges?

Q:

What are trade secrets? How are they used to protect valuable intangible assets ?

Q:

What are AIO statements? How are they used by marketers?

Q:

Business Database Applications In 1996, Arnold and Maria Starks opened the Fit-4-Life Fitness Center in Cocoa Beach, Florida. This business was the culmination of a dream of the Starks to open their...

Q:

IFSM 461: Systems Analysis and Design Precision Electronic Parts, Inc. Case Study Introduction This case study will be used for a series of staged assignments. It should be thoroughly read and...

Q:

An Entity Relationship Diagram (ERD) is a deliverable that is created during the logical data modeling process that focuses on the data, unlike a DFD that focuses on the processes. The data in an...

Q:

Stage 3: System Design Specification Before you begin this assignment, be sure you have read the Case Study and all assignments for this class, especially Stage 4: Final System Report. The feedback...

Q:

The picture is roughly what the answer should be formatted like! Based on the narratives, draw the following ERDs. Make sure you add the Primary Keys, Foreign Keys, verbs that represent the...

Q:

Why is it important to use ERDs when designing databases? ERDs help improve system performance. ERDs allow automatic database backups. ERDs help visualize and clarify relationships between data...

Q:

Database exists as an important part of an information system. As you may recall, information systems also contain people, procedures, input data, output data software and hardware. Your database...

Q:

Studies indicate that drinking water supplied by some old lead-lined city piping systems may contain harmful levels of lead. An important study of the Boston water supply system showed that the...

Q:

How would you depict the trade-off between equity and efficiency on a graph? How would a government decide where it wants to be on this curve?

Q:

True or False: When making special order decisions, depreciation expense on existing factory equipment is usually relevant to the decision .

Q:

Message Strategies: Negative Employment Messages [LO-5] Elaine Bridgewater, the former professional golfer you hired to oversee your golf equipment companys relationship with retailers, knows the...

Q:

Now that you are familiar with input masks and validation rules, your team leader wants you to review two more data items, as follows: A. Create input masks for the two additional data items shown in...

Q:

1. Create a detail report that will display all SCR courses in alphabetical order, with the course name and the instructor name in a group header; the Social Security number, name, and telephone...

Q:

Explain the main differences between a file processing system and a database system.

Q:

Anchors are ubiquitous in financial markets. Give some examples.

Q:

Statement of Cash Flows You have just been hired as a financial analyst for Basel Industries. Unfortunately, company headquarters (where all of the firm's records are kept) has been destroyed by...

Q:

Ace Industrial Machines issued 154,000 zero coupon bonds seven years ago. The bonds have a par value of $1,000 and originally had 30 years to maturity with a yield to maturity of 7.4 percent....