Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask DBMS Expert


Home >> DBMS

Q1. For the given relations:

Members (mid, name, design, age)
Books (Bid, Btitle, BAuthor, Bpublisher, Bprice)
Reserves (mid, Bid, date)
Here, Bid is book identification, Btitle is Book title, Bpublisher is bookpublisher,
Bprice is Book price, mid is Members identification and Desig is designation.

Now prepare down the queries in relational algebra to:

a) List out the title of books reserved by the Professors older than 45 years.

b) Determine ids of members who have not reserved books costing more than Rs. 500.

c) Find out the author and title of the books reserved on 27-May-2007.

d) Determine the names of members who have reserved all the books.

Q2. In a tuple relational calculus query with n tuple variables, determine the typical minimum number of join conditions? describe why? Illustrate the effect of having a smaller number of join conditions?

DBMS, Programming

  • Category:- DBMS
  • Reference No.:- M910606

Have any Question? 


Related Questions in DBMS

Create a small bank account database with one account table

Create a small Bank Account database with one Account table. The Account table Should have fields for account number, customer last and first names, and current balance. The type of database will be Access .Populate the ...

Computer sciencein reference to your database design

Computer Science In reference to your Database Design Proposal: Proposal Outline, provide a narrative analysis of the customer and user needs by defining the customers and users as well as describing their individual nee ...

Lab manualin this lab you will learn how to use ddl and

Lab Manual In this lab you will learn how to use DDL and Oracle Enterprise server to create user accounts, modify, monitor and delete them. You will take the first look at object permissions in Oracle. The last assignmen ...

Assignment database modeling and normalizationimagine that

Assignment: Database Modeling and Normalization Imagine that you work for a consulting firm that offers information technology and database services. Part of its core services is to optimize and offer streamline solution ...

Data analysis projectyou have contracted with a local

Data Analysis Project You have contracted with a local school district to help them decide whether to use an interactive computer program or a standard chapter from a textbook to teach students to use fractions. The scho ...

Discussionyou have been asked to help a critical

Discussion You have been asked to help a critical infrastructure company in analyzing the privacy and security of a SCADA system. Conduct research on the topic and answer the following: 1. How would you describe general ...

1 what is the most popular database model2 how are primary

1. What is the most popular database model? 2. How are primary and foreign keys different? 3. What are the five important software components of a database management system? 4 What are the four major types of data-minin ...

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 ...

Your team is a consulting company that specializes in rapid

Your team is a consulting company that specializes in rapid application development. A client company wishes to improve their customer data and interactions records. You create a simple customer relationship system for t ...

Virtualization fundamentalsunit 3 research projectwrite an

Virtualization Fundamentals Unit 3 Research Project Write an overview of *any two* of the following topics. Each overview should be between one half and one full page long. You should use a minimum of two sources for eac ...

  • 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

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

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen