Define the relations as tables in sql, Database Management System

Assignment Help:

Consider the relations given below
Borrower (id_no, name)
Book (accno., title, author, borrower_idno)
(a) Define the above relations as tables in SQL forming real world assumptions about the kind of the fields. Define the primary keys and the foreign keys.
(b) For the above relations answer the subsequent queries in SQL
What are the titles of the books borrowed through the borrower whose id-no in 365.
(i) Find out the numbers and names of borrowers who have borrowed books on DBMS in ascending order in id_no.
(ii) List the names of borrowers who have borrowed at least two books.

a) Create table Book
(Accno int Primary Key,
title char(30),
author char(30),
borrow-idno int references Borrower_id.no );
Create table borrower
(id-no int Primary Key,
name char(30) );
b) (i) Select title from Book, Borrower where Borrower.id_no =Book.borrower-idno and borrower.id_no = 365
(ii) Select id_no, name from Borrower, Book where Borrower.id_no= Book.borrower_idno and title= ‘DBMS' order by id_no asc;
(iii) Select name from Borrower, Book where Borrower.id_no = book.borrower_id_no having count (*) > 2

 


Related Discussions:- Define the relations as tables in sql

Give an example of object representation, Give an example of Object Represe...

Give an example of Object Representation  For illustration, consider the implementation of a social security number within an employee object that is shown in Figure. The soci

What is a homogeneous distributed database, What is a homogeneous distribut...

What is a homogeneous distributed database? In homogeneous distributed databases, all sites have the same database management system software, are aware of one another, and agr

Whta is the advantage of the database management approach, Whta is the adva...

Whta is the advantage of the database management approach? The advantage of the database management approach is data is integrated and can be accessed by multiple programs.

Which operations need the participating relations to union, Which operation...

Which operations need the participating relations to be union compatible? A UNION, INTERSECTION and DIFFERENCE operations need the participating relations to be union compatibl

Function module, When a function module is activated syntax checking is per...

When a function module is activated syntax checking is performed automatically. YEs, a function module is activated syntax checking.

Briefly describe the different kinds of users of a dbms, Briefly describe t...

Briefly describe the different kinds of users of a DBMS.  Ans: Different sorts of DBMS users are: (a)  Software Engineers: These are the people accountable for developing ap

Explain forms based and graphical interface, Explain forms based and graphi...

Explain forms based and graphical interface? Forms based and graphical interface: graphical user interface (GUI) is a kind of user interface which permits people to interact

Explain strict two-phase locking, Explain Strict Two-Phase locking A tr...

Explain Strict Two-Phase locking A transaction T does not release any type of its exclusive (X) locks until that transaction commits or aborts. In this method no other transact

Stored and derived attributes, Attributes that are directly kept in the dat...

Attributes that are directly kept in the data base. For example, 'Birth date' attribute of a person.   Derived  Attributes that are not stored directly but can be derived

Original Database, I need an ERD created for any original database(can be o...

I need an ERD created for any original database(can be on anything). It needs to be 3NF. I then need all the CREATE STATEMENTS, INSERT STATEMENTS(anything you can think of as long

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