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

DFD AND DATA DICTIONARY, Hoosier Burger''s food ordering system dfd and dat...

Hoosier Burger''s food ordering system dfd and data dictionary

Supermarkets, A supermarket requires to develop software to encourage regul...

A supermarket requires to develop software to encourage regular customers. For this the customer requires to supply his name address telephone number and driving license number. A

Explain big-bang testing, Big-Bang Testing : In this all the modules after ...

Big-Bang Testing : In this all the modules after unit testing are joint and tested in one go. The problem with this type of testing is debugging of errors.

List any three characteristics of a good srs, List any three characteristic...

List any three characteristics of a good SRS.   The SRS should be: Correct , Unambiguous, Complete    1. Correct: An SRS is correct iff every requirement stated therein is one

Reverse engineering, explain the effect of reverse engineering of software ...

explain the effect of reverse engineering of software development #

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

Describe component testing, Describe component testing. - Component tes...

Describe component testing. - Component testing is also called as module, unit or program testing. - It looks for defects in software and verifies its functioning. - It c

What is data dictionary, What is Data Dictionary? Data dictionary is a ...

What is Data Dictionary? Data dictionary is a storehouse of data giving information about data. It is a list of terms and their meaning for all data items and data files of a s

Explain the software life cycle model, Q. Explain the software life cycle m...

Q. Explain the software life cycle model that incorporates risk factor. Ans. The problem with traditional software process models is that they don't deal sufficiently with th

The phases of a problem solving loop, Problem solving is a critical skill f...

Problem solving is a critical skill for success in business—in fact it’s often what you are hired and paid to do. This article explains the five problem solving steps and provides

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