Question: 1. Discuss, with examples, what are referential constraint actions? 2. Explain why it might be more appropriate to declare an attribute that contains only digits

1. Discuss, with examples, what are referential constraint actions?

2. Explain why it might be more appropriate to declare an attribute that contains only digits as a character data type instead of a numeric data type.

3. Explain why the two following commands produce different results. SELECT DISTINCT COUNT (V_CODE) FROM PRODUCT; SELECT COUNT (DISTINCT V_CODE) FROM 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!

1. Discuss, with examples, what are referential constraint actions? 2. Explain why it might be more appropriate to declare an attribute that contains only digits as a character data type instead of a...

1. Explain why it might be more appropriate to declare an attribute that contains only digits as a character data type instead of a numeric data type. 2. What are referential constraint actions? 2....

In a SELFCT query, what is the difference between a WHERE clause and a HAVING claus Explain why the following command would create an trror and what changes could be to fix the error SELECI V CODE,...

Please answer 1,2,7,8,9 in detail In a SELECT query, what is the difference between a WHERE clause and a HAVING clause? 2. Explain why the following command would create an error and what changes...

What type of integrity is enforced when a primary key is declared? Explain why it might be more appropriate to declare an attribute that contains only digits as a character data type instead of a...

All questions below pertain to material learned from the textbook (Chapter 8) and lectures.Please put all answers to the questions below in this document for grading. Please do NOT submit answers...

Explain why it might be more appropriate to declare an attribute that contains only digits as a character data type instead of a numeric data type. Give specific examples (3) that are not in the book...

Chapter 3 Motivating Environment Chapter Overview The intent of this chapter is to examine what motivates people. Included are discussions of theoretical literature, empirical research, and some...

Please attemp the question I have attached and I have guideline for the answers.For question 3,difference between tax evasion and avoiddance can be found in seminar 2 slides.Tax avoidance mean the...

The following data fragment occurs in the middle of a data stream for which the byte-stuffing algorithm described in the text is used: A B ESC C ESC FLAG D. What is the output after stuffing?

What is an NIF? A DR?

what is a key advantage of a closed - end private equity fund structure

PE 18. Mr. Dock desires to have $1,000,000 seventeen years from now for his son's college fund. If he can earn 5 percent on her money, what amount should she deposit now? 19. David invested $10,000...

1. Discuss the four components of language.

g. What do your findings suggest about the power of the media and their effect on identity formation and intercultural communication? (Think about avowal, ascription, and interpellation.)

f. What stereotypes were reinforced in the commercials?