Ask Question, Ask an Expert


Ask DBMS Expert

Home >> DBMS

Q1. Describe the mapping of the given to the relational database schema.

a) Aggregation
b) Generalization or Specialization
c) Strong or weak entity sets
d) Ternary Relationship

Q2. Consider the given LIBRARY relational schema:

Book (Book_id, Title, Publisher_name)
Book_Authors (Book_id, Author_name)
Publisher (Name, Address, Phone)
Book_copies (Book_id, Branch_id, No_of_copies)
Book_loans (Book_id, Branch_id, Card_no, Date_out, Due_date)
Library_branch (Branch_id, Branch_name, Address)
Borrower (Card_no, Name, Address, Phone)

prepare down the relational algebra expression for the given queries:

a) Determine the number of copies of the book titled TLT owned by library branch whose name is "S"?

b) Determine the number of copies of the book titled TLT owned by each and every library branch?

c) Determine the names of all borrowers who don’t have any books checked out.

d) Determine the book title, the borrower's name, and the borrower's address for each book which is loaned out from branch named "S" and whose Due Date is today.

e) For each and every library branch, determine the branch name and the total number of books loaned from that branch.

DBMS, Programming

  • Category:- DBMS
  • Reference No.:- M911728

Have any Question? 

Related Questions in DBMS

Project database and programming designthis assignment

Project: Database and Programming Design This assignment consists of two sections: a design document and a revised Gantt chart or project plan. You must submit both sections as separate files for the completion of this a ...

Taskoverview of business casealive amp boating aampb is a

Task Overview of business case: Alive & Boating (A&B) is a small start-up company that sells small boats in Wagga. A&B keeps its models in several showrooms across the city. At this stage customers cannot view the availa ...

Discussionnormalization and redundancy please respond to

Discussion "Normalization and Redundancy" Please respond to the following: • Suggest one of the problems that normalization seeks to solve within a database. Describe one example of your suggested problem, and explain th ...

Database systems assignment - student enrolment database a

Database Systems Assignment - Student Enrolment Database A. Task Description 1. Overview Your task is to create and test a database in MySQL using PhpMyAdmin. You are provided with a scenario and supporting documents, de ...

Assignmentcreate a simple excel spreadsheet with data to

Assignment Create a simple excel spreadsheet with data to update the database. 1. Create a form (frmUpdateMediaLink) to link the spreadsheet to a table in the database (you can link the spreadsheet manually using the wiz ...

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. ...

Database design discusion post and assignmentdiscusion post

Database Design Discusion Post and Assignment Discusion Post: Data as a Corporate Resource and Foreign Keys Please respond to BOTH of the following questions: Question A Discuss how data can be a corporate resource and d ...

Assignmentas the new manager of a convenience store you

Assignment As the new manager of a convenience store, you have noticed issues with the manual method of tracking sales using paper sales tickets and spreadsheets, as well as, shortages on some of the more popular items c ...

Ngocbo database projectthe purpose of this project is to

NGO/CBO Database Project The purpose of this project is to build a database to store and retrieve basic information on NGOs/CBOs collected through a questionnaire given in the Appendix. Database Specifications In view of ...

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

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