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

The worker pool multi-threading architecture, QUESTION (a) Compare the ...

QUESTION (a) Compare the worker pool multi-threading architecture with the thread-per-request architecture. (b) What thread operations are the most significant in cost? (

What is a real time system, What is a Real time system? Real time syste...

What is a Real time system? Real time system is a software system in which the correct functionalities of the system are dependent upon results formed by the system and the tim

What is sdlc , Explain  SDLC ? Ans) SDLC-( software development life cyc...

Explain  SDLC ? Ans) SDLC-( software development life cycle) is an acronym.

Explain the quality assurance manager and project manager, How do you diffe...

How do you differentiate the roles of Quality Assurance Manager and Project Manager? Quality Assurance Manager (QA Manager) produces the process to be followed at every phase

Explain about non-functional requirement for a software, Q. Explain about n...

Q. Explain about non-functional requirement for a software ? Ans) Nonfunctional requirements are the basic characteristics of the system which will not be expressed as function

Illustrate exploratory testing, Illustrate exploratory testing. - In ex...

Illustrate exploratory testing. - In exploratory testing approach testers are involved in maximum test execution and minimum planning. - Planning includes creation of a test

The advantages of using these specific languages of srs, What are the advan...

What are the advantages of using these specific languages of SRS?      The major benefit of using a natural language is that both client and superior understand the language. T

Illustrate the process maturity, Define process maturity. In recent ye...

Define process maturity. In recent years there has been a major highlighting on process maturity.  The Software Engineering Institute. (SEI) has developed a widespread model p

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