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 data dictionary, Q. What is Data Dictionary? Ans Data dicti...

Q. What is Data Dictionary? Ans Data dictionary is a stockroom of data giving information about data. It is a list of terms as well as their definition for all data items a

What is software maintenance, What is software maintenance? Changes to...

What is software maintenance? Changes to the software are made in response to altered requirements but the fundamental structure of the software remains stable.

Explain in detail about system testing, Explain in detail about system test...

Explain in detail about system testing. System testing Stress testing Performance testing Security testing

What is test scenario, The terms "test scenario" and "test case" are certai...

The terms "test scenario" and "test case" are certain used synonymously. Test scenarios are test cases or test scripts, and the series in which they are to be implemented. Test sce

State about the software requirements specification, State about the Softwa...

State about the Software Requirements Specification This document is produced as output of requirement analysis.  Requirement analysis involves obtaining a clear and thorough

What does it mean by business process engineering tools, What does it mean ...

What does it mean by business process engineering tools ?

What is the meaning of cardinality in data modelling, What is the meaning o...

What is the meaning of cardinality in data modelling? Cardinality in data modelling, cardinality specifies how the of occurrences of one object is linked to the number of occur

Category Partition Testing and Data Flow Assignment, The following program ...

The following program will display an integral solution to the quadratic equation ax2+bx+c for integral values of a,b, and c, where a,c fall between 0 and 10, while b falls between

How do we zero down on automation tools, How do we zero down on automation ...

How do we zero down on automation tools for regression testing? Below criteria are used when zeroing down on automation tools for regression testing: - Risk analysis such as

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