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

External forces driving competition in the erp industry, Cloud computing is...

Cloud computing is becoming an unrelenting force that is driving competition in the ERP industry and can no longer be ignored by legacy systems, such as Oracle and SAP. Larry Ellis

Explain in detail about functional modeling, Explain in detail about Functi...

Explain in detail about Functional Modeling. This model explains the computations that take place within a system. This model is useful when the transformation from the i

Draw a memory map for a system, Draw a memory map for a system with a memor...

Draw a memory map for a system with a memory capacity of 256MB. Each memory location in the system is 8 bits. Assume the system has one 4 MB memory block used as ROM residing at th

What are the umbrella activities of a software process, What are the umbrel...

What are the umbrella activities of a software process? Software project tracking and control. Risk management. Formal Technical Reviews. Software Quality Assurance.

Pareto charts, Two partners in an upholstery business are interested in dec...

Two partners in an upholstery business are interested in decreasing the number of complaints from customers who have had furniture reupholstered by their staff. For the past six mo

State the system engineering hierarchy, State the System Engineering Hierar...

State the System Engineering Hierarchy? The world view is composed of a set of domains (Di), which can each be a system, or system of systems. WV = {D1,D2,D3,...........,Dn}

Explain about rapid prototyping techniques, Explain about rapid prototyping...

Explain about rapid prototyping techniques.  Used to animate the system specification. It is expressed in a formal, mathematical language to provide a system prototype

What is embedded system partitioning, Question : (a) What is embedded s...

Question : (a) What is embedded system partitioning? What is decided during partitioning? (b) What is the difference between structural and functional partitioning? Which on

Software licence, main characteristics of software lease

main characteristics of software lease

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