Introduction
The database is now such an integral part of our day-to-day life that often we are not aware
we are using one. To start our discussion of databases, in this section we examine some
applications of database systems. For the purposes of this discussion, we consider a
database to be a collection of related data and the Database Management System (DBMS)
to be the software that manages and controls access to the database. A database application
is simply a program that interacts with the database at some point in its execution. We also
use the more inclusive term database system to be a collection of application programs that
interact with the database along with the DBMS and database itself.
Introduction
The database is now such an integral part of our day-to-day life that often we are not aware
we are using one. To start our discussion of databases, in this section we examine some
applications of database systems. For the purposes of this discussion, we consider a
database to be a collection of related data and the Database Management System (DBMS)
to be the software that manages and controls access to the database. A database application
is simply a program that interacts with the database at some point in its execution. We also
use the more inclusive term database system to be a collection of application programs that
interact with the database along with the DBMS and database itself.
Introduction
The database is now such an integral part of our day-to-day life that often we are not aware
we are using one. To start our discussion of databases, in this section we examine some
applications of database systems. For the purposes of this discussion, we consider a
database to be a collection of related data and the Database Management System (DBMS)
to be the software that manages and controls access to the database. A database application
is simply a program that interacts with the database at some point in its execution. We also
use the more inclusive term database system to be a collection of application programs that
interact with the database along with the DBMS and database itself.
Introduction
The database is now such an integral part of our day-to-day life that often we are not aware
we are using one. To start our discussion of databases, in this section we examine some
applications of database systems. For the purposes of this discussion, we consider a
database to be a collection of related data and the Database Management System (DBMS)
to be the software that manages and controls access to the database. A database application
is simply a program that interacts with the database at some point in its execution. We also
use the more inclusive term database system to be a collection of application programs that
interact with the database along with the DBMS and database itself.
Introduction
The database is now such an integral part of our day-to-day life that often we are not aware
we are using one. To start our discussion of databases, in this section we examine some
applications of database systems. For the purposes of this discussion, we consider a
database to be a collection of related data and the Database Management System (DBMS)
to be the software that manages and controls access to the database. A database application
is simply a program that interacts with the database at some point in its execution. We also
use the more inclusive term database system to be a collection of application programs that
interact with the database along with the DBMS and database itself.
Renting a video
When you wish to rent a video from a video rental company, you will probably find that
the company maintains a database consisting of the video titles that it stocks, details on the
copies it has for each title, whether the copy is available for rent or whether it is currently
on loan, details of its members (the renters), and which videos they are currently renting
and date they are returned. The database may even store more detailed information on each
video, such as its director and its actors. The company can use this information to monitor
stock usage and predict future buying trends based on historic rental data.
Using the Internet
Many of the sites on the Internet are driven by database applications. For example,
you may visit an online bookstore that allows you to browse and buy books, such as
Amazon.com. The bookstore allows you to browse books in different categories, such as
computing or management, or it may allow you to browse books by author name. In either
case, there is a database on the organization’s Web server that consists of book details,
availability, shipping information, stock levels, and on-order information. Book details
include book titles, ISBNs, authors, prices, sales histories, publishers, reviews, and detailed
descriptions. The database allows books to be cross-referenced: for example, a book may
be listed under several categories, such as computing, programming languages, bestsellers,
and recommended titles. The cross-referencing also allows Amazon to give you information
on other books that are typically ordered along with the title you are interested in.
As with an earlier example, you can provide your credit card details to purchase one or
more books online. Amazon.com personalizes its service for customers who return to its
site by keeping a record of all previous transactions, including items purchased, shipping,
and credit card details. When you return to the site, you can now be greeted by name and
you can be presented with a list of recommended titles based on previous purchases.
Studying at university
If you are at university, there will be a database system containing information about yourself,
the course you are enrolled in, details about your grant, the modules you have taken
in previous years or are taking this year, and details of all your examination results. There
may also be a database containing details relating to the next year’s admissions and a
database containing details of the staff who work at the university, giving personal details
and salary-related details for the payroll office.
The database is now such an integral part of our day-to-day life that often we are not aware
we are using one. To start our discussion of databases, in this section we examine some
applications of database systems. For the purposes of this discussion, we consider a
database to be a collection of related data and the Database Management System (DBMS)
to be the software that manages and controls access to the database. A database application
is simply a program that interacts with the database at some point in its execution. We also
use the more inclusive term database system to be a collection of application programs that
interact with the database along with the DBMS and database itself.
Introduction
The database is now such an integral part of our day-to-day life that often we are not aware
we are using one. To start our discussion of databases, in this section we examine some
applications of database systems. For the purposes of this discussion, we consider a
database to be a collection of related data and the Database Management System (DBMS)
to be the software that manages and controls access to the database. A database application
is simply a program that interacts with the database at some point in its execution. We also
use the more inclusive term database system to be a collection of application programs that
interact with the database along with the DBMS and database itself.
Introduction
The database is now such an integral part of our day-to-day life that often we are not aware
we are using one. To start our discussion of databases, in this section we examine some
applications of database systems. For the purposes of this discussion, we consider a
database to be a collection of related data and the Database Management System (DBMS)
to be the software that manages and controls access to the database. A database application
is simply a program that interacts with the database at some point in its execution. We also
use the more inclusive term database system to be a collection of application programs that
interact with the database along with the DBMS and database itself.
Introduction
The database is now such an integral part of our day-to-day life that often we are not aware
we are using one. To start our discussion of databases, in this section we examine some
applications of database systems. For the purposes of this discussion, we consider a
database to be a collection of related data and the Database Management System (DBMS)
to be the software that manages and controls access to the database. A database application
is simply a program that interacts with the database at some point in its execution. We also
use the more inclusive term database system to be a collection of application programs that
interact with the database along with the DBMS and database itself.
Introduction
The database is now such an integral part of our day-to-day life that often we are not aware
we are using one. To start our discussion of databases, in this section we examine some
applications of database systems. For the purposes of this discussion, we consider a
database to be a collection of related data and the Database Management System (DBMS)
to be the software that manages and controls access to the database. A database application
is simply a program that interacts with the database at some point in its execution. We also
use the more inclusive term database system to be a collection of application programs that
interact with the database along with the DBMS and database itself.
Renting a video
When you wish to rent a video from a video rental company, you will probably find that
the company maintains a database consisting of the video titles that it stocks, details on the
copies it has for each title, whether the copy is available for rent or whether it is currently
on loan, details of its members (the renters), and which videos they are currently renting
and date they are returned. The database may even store more detailed information on each
video, such as its director and its actors. The company can use this information to monitor
stock usage and predict future buying trends based on historic rental data.
Using the Internet
Many of the sites on the Internet are driven by database applications. For example,
you may visit an online bookstore that allows you to browse and buy books, such as
Amazon.com. The bookstore allows you to browse books in different categories, such as
computing or management, or it may allow you to browse books by author name. In either
case, there is a database on the organization’s Web server that consists of book details,
availability, shipping information, stock levels, and on-order information. Book details
include book titles, ISBNs, authors, prices, sales histories, publishers, reviews, and detailed
descriptions. The database allows books to be cross-referenced: for example, a book may
be listed under several categories, such as computing, programming languages, bestsellers,
and recommended titles. The cross-referencing also allows Amazon to give you information
on other books that are typically ordered along with the title you are interested in.
As with an earlier example, you can provide your credit card details to purchase one or
more books online. Amazon.com personalizes its service for customers who return to its
site by keeping a record of all previous transactions, including items purchased, shipping,
and credit card details. When you return to the site, you can now be greeted by name and
you can be presented with a list of recommended titles based on previous purchases.
Studying at university
If you are at university, there will be a database system containing information about yourself,
the course you are enrolled in, details about your grant, the modules you have taken
in previous years or are taking this year, and details of all your examination results. There
may also be a database containing details relating to the next year’s admissions and a
database containing details of the staff who work at the university, giving personal details
and salary-related details for the payroll office.
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