How a constraint on total participation of a in r

Assignment Help Basic Computer Science

Reference no: EM131058045

Consider a many-to-one relationship R between entity sets A and B. Suppose the relation created from R is combined with the relation created from A. In SQL, attributes participating in a foreign key constraint can be null. Explain how a constraint on total participation of A in R can be enforced using not null constraints in SQL.

Reference no: EM131058045

Questions Cloud

What are the benefits of globalization on folk cultures : What are the consequences and benefits of globalization on folk/local cultures? Discuss points, use and bold at least three chapter terms, and give at least one example. 150-200 words.

The local tax assessor correctly value his house : You have just been made a valuation analyst. Before you get training (what else is new!), your boss asks you to value a number of items: 1) a publicly-traded company; 2) a family business; 3) a shopping center; 4)

Where should al ain dairy locate its activities : Where should Al Ain Dairy locate its activities - What should be the best strategic plan for the company for the next two years? Why and what are the resources needed to manage the new initiatives?

Safe working environment : Flexible work schedules, available day care, and a safe working environment are just some of the nonwage benefits that can be offered to attract and retain quality employees. As such, monetary compensation is not the sole factor for retaining emp..

How a constraint on total participation of a in r : In SQL, attributes participating in a foreign key constraint can be null. Explain how a constraint on total participation of A in R can be enforced using not null constraints in SQL.

Research paper about mechanical engineering : Write a 10-11 page research paper about mechanical engineering include:- classes needed to be taken in university to graduate with a bachelors and a masters degree

Explain why employee engagement is important : 1. Explain why employee engagement is important, and how to foster such engagement. What exactly would you as a supervisor do to increase your employee's engagement?

Problem regarding the stage of dying : Britt knows that he is dying. "I will donate a large sum of money to cancer research if I can just live long enough to see my grandchild born," he pleaded. Britt is most likely in which stage of dying, according to Kübler-Ross?

Accelerometer for airbag system or wii remote : Research on the following three aspects via patents, journals, reports, online resources, etc- Design and Theory and Fabrication.

User Account

All Pages