Explain the purpose of an outer join, Software Engineering

Assignment Help:

(a) What is a view?

(b) What is the implication of creating a view with the select * statement in the view definition?

(c) Make reference to the relational schema given in Appendix I to answer this question. Create a VIEW called SALARY_VU based on the employee last names, first names, department names and salaries for those employees whose monthly salary is greater than 10000. Label the column Employee Last Name, Employee First Name, Department and Salary respectively. Make sure to encrypt the view.

(d) Explain the purpose of an Outer Join.

(e) In the HR schema given in the Appendix II, there are certain employees who are not assigned to any department and there is a few departments where no employee has been assigned yet.

(i) Write SQL code to display the employee Last name, the department_id and the department name for all employees. Your answer should display even those employees who have not been assigned to any departments.

(ii) Write SQL code to display the employee Last name, the department_id and the department name for all employees. Your answer should display even those departments which have no employee assigned to the departments.


Related Discussions:- Explain the purpose of an outer join

Database management systems, Database Management Systems: These are es...

Database Management Systems: These are essentially programming frameworks, and can offer good storage and retrieval systems. They are mainly intended for programmers to intera

Testing, What is software testing?

What is software testing?

Describe software development life cycle activities, Question: (a) Des...

Question: (a) Describe with a pictorial representation ISO 12207 software development life cycle activities. (b) A public library is considering the implementation of

Explain the different architectures developed during bpe, What are the diff...

What are the different architectures developed during BPE? Data architecture àframework for the information needs of a business. Application architecture à incorporates the

What is quality, What is quality? Quality, simplistically, means that a...

What is quality? Quality, simplistically, means that a product should meet its requirement. This is problematical for software systems. There is a tension among custom

Explain agent-oriented programming languages, Question: (a) Name two a...

Question: (a) Name two agent-oriented programming languages. (b) Distinguish between communication protocols and interaction protocols for agent systems. Give two example

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd