CIS 223 Unit 2 Lab Assignment 1

From Computer Science, General Computer Science
Due on 07 Apr, 2016 12:37:00
Asked On 07 Apr, 2016 12:47:11
Due date has already passed, but you can still post solutions.

Question posted by

Godfather08
Rating : 0
Grade : No Rating
Questions : 142
Solutions : 0
Blog : 0
Earned : $0.00

1. What is the difference between a database and a table?

2.What does it mean to say that a database displays both entity integrity and referential integrity?

3.Why are entity integrity and referential integrity important in a database?

4. What are the requirements that two relations must satisfy to be considered union-compatible?

5.Which relational algebra operators can be applied to a pair of tables that are not union-compatible?

6.Explain why the data dictionary is sometimes called “the database designer’s database.”

Suppose you have the ERM shown in Figure Q3.14. How would you convert this model into an ERM that displays only 1:M relationships? (Make sure you create the revised ERM.) Refer to the table in this attachment.

Attachment

Capture Pic 1.PNG (78 KB)

Please Login or Register To Submit the Solution for the Question

Available Answers

$ 20.00

[Solved] CIS 223 Unit 2 Lab Assignment 1

This Solution has been Purchased 1 time
Average Rating for this solution is A+
Submitted On 07 Apr, 2016 01:40:57

Answer posted by

Rckumhar
Rating : 2
Grade : A+
Questions : 0
Solutions : 8
Blog : 0
Earned : $28.90

CIS 223 Unit 2 Lab Assignment ...

Buy now to view the complete solution

Attachment

$ 6.00

[Solved] Rest of the Answers

This Solution has been Purchased 1 time
Average Rating for this solution is A+
Submitted On 07 Apr, 2016 06:48:44

Answer posted by

Rckumhar
Rating : 2
Grade : A+
Questions : 0
Solutions : 8
Blog : 0
Earned : $28.90

Thanks to purchase my answer ...

Buy now to view the complete solution

Attachment

Rest of the answers.docx (12 KB)

The benefits of buying study notes from CourseMerits

Assurance Of Timely Delivery

We value your patience, and to ensure you always receive your homework help within the promised time, our dedicated team of tutors begins their work as soon as the request arrives.

Best Price In The Market

All the services that are available on our page cost only a nominal amount of money. In fact, the prices are lower than the industry standards. You can always expect value for money from us.

Uninterrupted 24/7 Support

Our customer support wing remains online 24x7 to provide you seamless assistance. Also, when you post a query or a request here, you can expect an immediate response from our side.