User Account

All Pages

Expressions in tuple relational calculus and domain relation

Assignment Help Database Management System
Reference no: EM1364471

Q1) Consider the relational database described in Problem 1. Give expressions in tuple relational calculus and domain relational calculus for each of the following queries:

(a) Find the names of all employees who work for company C2 and earn more than $70,000 annually.

(b) Find the names of all employees who are not managers.

(c) Find all the companies that have offices in all the cities in which company C2 has an office.

Reference no: EM1364471

Questions Cloud

Quantitative reasoning for business questions : Is it not possible to have two point of the same value at the peak of the bell shape curve? If this is the case, then there are two like value at the peak of the curve meaning there is a finite solution. Is this possible?
Passive loss and research tax questions : Discuss the factors to consider when determining eligibility for the R&D Tax Credit. Discuss your reaction to the president's approach of R&D deduction related to the software training costs.
Explain write an inter-office memorandum addressed to mark : Explain Write an inter-office memorandum addressed to Mark Smith who is your new subordinate at work and You are to explain to him how emails can often create miscommunication
Types of sport sponsorship agreements : What are the benefits and risks for an organization when entering into the following types of sport sponsorship agreements: Governing-body sponsorships, team sponsorships, athlete sponsorships, facility sponsorship, and event sponsprship?
Expressions in tuple relational calculus and domain relation : Consider the relational database described in Problem Give expressions in tuple relational calculus and domain relational calculus for each of the following queries: Find all the companies that have offices in all the cities in which company C2..
Analyzing the financial performance : The ratio analysis indicates that ACME has increased their profits and decreased their liabilities from 2003 to 2004. ACME has also increased their ability to cover interest payments and increased their return on assets.
Elucidate the reasoning for your vote based on the four step : Elucidate the reasoning for your vote based on the four steps of risk assessment. Consider any relevant political, social, and economic aspects involved.
Explain how many cars does the united states export : Explain how many cars does the United States export. Suppose a car costs $10,000 on the world market. How much, then, does a barrel of oil cost on the world market.
Access database and queries : What are some of the advantages and the disadvantages of database forms? What is your experience in using Queries? Have you ever read the SQL commands generated by a Query in Access database?

Reviews

Write a Review

Database Management System Questions & Answers

  Explaining controls for database to execute transaction

Controls which need a database to either execute transaction completely or not at all.

  Write select statement that returns three columns

Write a SELECT statement that returns three columns: InvoiceTotal From the Invoices table, 10% 10% of the value of InvoiceTotal.

  Relations of airline flight information

The relations given below keep track of airline flight information:Flights(flno: integer, from: string, to: string, distance:integer, departs: time, arrives: time, price: real)Aircraft(aid: integer, aflame: string, cruisingrange: integer)

  Analyse a set of data and write a memo

To analyse a set of data, and write a memo, identifying and explaining your insights into the operation of Todd Restaurants.

  Ensure the security of organizations distributed database

How can you make your database more hacker proof? How do you ensure the security of an organizations distributed database?

  Selecting opies of book titled the big magic

How many copies of the book titled „The big magic? are owned by the local library whose name is "Newtown" library?

  Method to change column name

Hhow can you change column name or what is a different way to write statement in SQL so it displays the amount column as money.

  Explaining uses for views

Views are integral part of virtual private databases, yet views are utilized for many other reasons. Find out many other uses for views.

  Choose a data storage problem of storing data in database

You should choose a data storage problem of your interest and identify the different pieces of data that should be stored in database.

  Role and tasks performed by database administrator

In 250 - 300 words describe role of a database administrator and the tasks performed by this role. Also, describe why this role is important in Database Management.

  Creating erd containing order and customer entity

Create ERD containing Order and Customer entity types connected by 1-M relationship from Customer to Order. Select suiatble relationship name using your common knowledge of intersection.

  Analysis of a simple case study

VSS has an existing software package that controls its high bay systems and wants to rewrite it. The existing system is written in C and uses C-ISAM files to store data.

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd