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

What is recovery testing and security testing, What is recovery testing and...

What is recovery testing and Security testing  Recovery testing is system tests that bind the software to fail in a variety of ways and justify that recovery is correctly perf

What is failure-directed testing, What is Failure-directed Testing Ans) ...

What is Failure-directed Testing Ans) Testing based on the information of the types of errors made in the earlier period that are likely for the system under test.

Expert Systems, Explain model-based expert systems and frame-based expert s...

Explain model-based expert systems and frame-based expert systems

Data Flow Diagram, I need help creating a DFD for an assignment. Is there a...

I need help creating a DFD for an assignment. Is there anyway you could help?

Why decision tables are not used in boundary value, Why decision tables are...

Why decision tables are used in many cases instead of boundary value and equivalence partitioning analysis? - A decision table is an efficient way to deal with combinations of

Explain static analysis, Explain Static analysis? Ans) (1) Analysis of a...

Explain Static analysis? Ans) (1) Analysis of a program that is performed without implementing the program. (2)The process of assessing a system or component based on its for

Differentiate between failures and faults, Differentiate between failures a...

Differentiate between failures and faults.   Failure:- Failure is the departure of external results of program operation from requirements. So failure is dynamic. Failure can

What is parameter, In software QA or software testing, a parameter is an it...

In software QA or software testing, a parameter is an item of information - like a name, number, or selected option - that is approved to a program, by a user or another program. B

Explain the sauers model, Question 1: a) Describe the various activitie...

Question 1: a) Describe the various activities and or processes related to the development of Information systems. b) Using a diagram, show the several development processes

Explain equivalence partitioning, What is equivalence partitioning? Equ...

What is equivalence partitioning? Equivalence partitioning is a black box procedure that divides the input domain into classes of data. From this data test cases can be foun

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