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

State the term- code coverage, State the term- Code Coverage This is a...

State the term- Code Coverage This is an analysis method that determines which parts of software have already been covered by test case suite and which are remaining.

Draw the context level dfd for the safe home software, Draw the Context lev...

Draw the Context level DFD for the Safe home Software. User commands Alarm type Telephone Number tone Sensor status Display Information

Design test cases for loop testing, Q. Regard as a program that reads a set...

Q. Regard as a program that reads a set of Data for 'n' no. of triangles. The program reads three integer values like representing the sides of triangles. The program prints for ea

Why testing is important with respect to software, Why testing is important...

Why testing is important with respect to software? A testing process focuses on logical internals of software ensuring that all statements have been tested and all are function

Software Metircs, I have a comprehensive question for Software Metrics ...i...

I have a comprehensive question for Software Metrics ...it is 16 question

Show the different levels of cmm, Q. Show the Different levels of CMM? ...

Q. Show the Different levels of CMM? 1) Initial (maturity level 1)- At this the lowest level there are fundamentally no sound software engineering management practices in plac

What are the demerits of spiral model, What are the demerits of spiral mode...

What are the demerits of spiral model? i. It is depends on customer communication. If the communication is not suitable then the software product that gets developed will not r

Describe any types of feasibility study, System Development Life Cycle (SDL...

System Development Life Cycle (SDLC) stages are sometimes known as System Study. System concepts which are important in developing business information systems expedite problem sol

Mobile application, we got the code for mobile app we need a document for t...

we got the code for mobile app we need a document for that

What is software engineering, What is software engineering? Software en...

What is software engineering? Software engineering is a discipline in which theories, process and tools are applied to develop professional software.

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