Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask DBMS Expert


Home >> DBMS

Q1. What do you mean by the term outer join? Describe the various types of outer joins with the help of illustrations.

Q2. Let consider the given relations for a database which keeps track of business trips of salespersons in a sales office:

SALESPERSON (SSN, Name, Start_Year, Dept_No)
TRIP (SSN, From_City, To_City, Departure_Date, Return_Date, Trip_ID)
EXPENSE (Trip_ID, Account#, Amount)

Specify the given queries in the relational algebra:

a) Find out the details (all attributes of TRIP relation) for trips whose expenses exceed $2000.

b) Find out the SSN of salesman who took trips to ‘Honolulu’.

c) Find out the total trip expenditures incurred by the salesman with SSN = ‘234-56-7890’.

Q3. Define the term view? How is it distinct from the table? prepare down the SQL syntax for making a view.

DBMS, Programming

  • Category:- DBMS
  • Reference No.:- M911774

Have any Question? 


Related Questions in DBMS

At this point you decide to implement a hash structure for

At this point, you decide to implement a Hash structure for the contributor data to prepare for searches. You will read the contributor information from a file provided; it is a comma delimited (CSV) file. As each record ...

Database management assignmentyou have been hired by

Database Management Assignment You have been hired by National Bank as their new database administrator. Your first task is to upgrade the bank's outdated computer system and implement a relational database management sy ...

1 draw and explain erm diagram andnbsp explain what is

1. Draw and explain ERM diagram and  explain what is REM 2. Explain what is Normalization . what is 0NF,1NF, 2NFand ,3NF and explain what is in the tables Entity Relationship Modeling and Normalization: 1 System Analysis ...

Assignment database environment proposalas one of the

Assignment: Database Environment Proposal As one of the program outcomes for the Bachelor of Science in Information Technology program, students must design and develop a database using professional principles and standa ...

Question 1use the tables below to answer the following

Question 1: Use the tables below to answer the following questions: customerid customerid firstname lastname city state 10101 John Gray Lynden Washington 10298 Leroy Brown Pinetop Arizona 10299 Elroy Keller Snoqualmie Wa ...

How up-to-date should data warehouse information

HOW UP-TO-DATE SHOULD DATA WAREHOUSE INFORMATION BE? Information timeliness is a must in a data warehouse-old and obsolete information leads to poor decision making. Below is a list of decision-making processes that peop ...

Assignmentthis must be your own unique work you cannot have

Assignment THIS MUST BE YOUR OWN UNIQUE WORK: you cannot have the exact same table as another student and you cannot turn in something you find online!Your work will be checked against a plagiarism database. The format m ...

Relational databases theory and practice assignmentanswer

Relational databases: theory and practice Assignment ANSWER ALL QUESTIONS Question 1 - Use the block notes to answer the following questions: i. Explain what is meant by the process of denormalization and how it is done. ...

Assignment1write a query that retrieves studentlastname

Assignment 1. Write a query that retrieves student.last_name, student.first_name and total number of enrollments from the student and enrollment tables. Your query should also include students that do not have any enroll ...

Lab modifying a database design in visiothis assignment

Lab: Modifying a Database Design in Visio This assignment contains two Sections: Visio Diagram and Design Summary. You must submit both sections as separate files in order to complete this assignment. Use "Appendix A: De ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro