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

Define a class diagram with example, Q. Define a Class diagram with example...

Q. Define a Class diagram with example? Class diagram: A class diagram in the UML (Unified Modelling Language) is a type of static structure diagram that describes the struct

Explain about spiral model, Q. Explain about Spiral Model? The Spiral m...

Q. Explain about Spiral Model? The Spiral model is one of the well-liked model used for large projects. This model was projected by Boehm in 1988 and it focuses on minimizing t

What are the misunderstanding arises in software development, What are the ...

What are the misunderstanding arise in software development Some of the common misunderstandings regarding software development are given below. 1.  Correcting errors is eas

Database schema, Question This question refers to the database Schema....

Question This question refers to the database Schema. Express the following queries in SQL: (a) List the First Name, Last Name and telephone number of all employees who wer

What is black box and white box testing techniques, Software Project Manage...

Software Project Management 1. What is black box and white box testing techniques? 2. Describe different roles of the software development? 3. List out different project

How to compute the cyclomatic complexity, How to compute the cyclomatic com...

How to compute the cyclomatic complexity? The cyclomatic complexity can be calculated by any one of the following ways. 1. The numbers of regions of the flow graph correspon

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

Write definition of erd, Write definition of ERD? Entity Relationship D...

Write definition of ERD? Entity Relationship Diagram shows the graphical presentation of the object relationship pair. It is above all used in database applications.

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