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

Final Year Project Help, I am currently working on a project and am far fro...

I am currently working on a project and am far from passing, I need help ASAP! The project task is to create a Decision support system for An Airline. It must predict and make de

What tasks do checkpoints perform in QTP, What tasks do checkpoints perform...

What tasks do checkpoints perform in QTP? Checkpoints in QTP are used to verify information which is expected to be displayed when running test. Following are 8 types of availa

IEEE 802.3, what is meant by 345 rule in IEEE 802.3 ?

what is meant by 345 rule in IEEE 802.3 ?

Define software design, Define Software design. Software design is a...

Define Software design. Software design is an iterative process by requirements are translated into a "blue print" for constructing the software. The blue print dep

Define software reliability, Define software reliability. Software reli...

Define software reliability. Software reliability is the probability that software will give failure-free operation in a fixed environment for a fixed interval of time. Probabi

What is recovery/error testing, Recovery/error testing is testing how well ...

Recovery/error testing is testing how well a system recovers from crashes, hardware failures, or other catastrophic problems.

Calculate the information flow index of individual modules, Q. For the stru...

Q. For the structural chart given in fig.1 calculate the Information Flow index of individual modules as well as whole software. Total information flow = IF (main) + IF (A

Write down the concept of functional independence, Write down the concept o...

Write down the concept of Functional independence.  a. Functional independence is gained by developing modules with "single minded" function and an "aversion" to extreme intera

Explain data collection, Data collection A metrics programme should be ...

Data collection A metrics programme should be based on a set of product and process data. Data should be collected immediately (not in retrospect) and, if possible, automati

Test a system though there is no documentation available, You need to test ...

You need to test a system though there is no documentation available and developers who developed it don't work there anymore. What would you do? - We will perform exploratory

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