Chapter 01
Database Introduction
Slide 1
Content
I.
Storing Student Information Problem
II. Using Database
1.
Databases and their Characteristics
2.
Database Examples.
3.
Components of a Database System.
4.
Database Design
Slide 2
I. Storing Student Information Problem
 A university need store its student information, lists of
classes, student’s grades.
• Each student has the following information: Student Number, Student Name,
Email Address
• A class has Class Number, Name, Term.
• Grade information includes Student Number, Class Number, Grade.
 All information needs to be computerized and stored
logically.
 We need a persistent storage. This storage must also be
reliable.
Slide 3
II. Using Database
 The purpose of a database is to help people track things
(data).
Slide 4
1. Databases and their Characteristics
1.1 Databases store data in tables.
1.2 All databases throughout the world, store instances in rows
and characteristics in columns.
Slide 5
1.3 A note on Conventions
 Table names in Capital letters.
 Column names in Capital of first letter.
1.4 A Database Has Data and Relationships
1.5 Summary:
Database store data in tables, and they represent the relationships among
the rows of those tables.
Slide 6
2. Database Examples
 Single-User Database
Applications
 Multiuser Database
Applications
 E-commerce Database
Applications
 Reporting and Data
Mining Database
Applications
Slide 7
3. Components of a Database System
3.1 Applications
3.2 SQL (Structured Query Language)
3.3 The DBMS (Database Management System)
3.4 Programming Languages
Slide 8
3.1 Applications
are computer programs that users interact with directly.
3.2 SQL (Structured Query Language)
is an internationally recognized standard language that is understood by all
commercial database management system products.
Slide 9
3.3 The DBMS (Database Management System)
Create, processes, and administers the database. A DBMS is a large of
complicated product and few organizations write their own DBMS program.
Examples: Microsoft SQLServer, Oracle, IBM DB2, …
Slide 10
3.4 Programming Language
• Desktop applications:
 Microsoft: Visual Basic, C++, VB.NET, C#.
 Borland: Delphi
 Open Source: Java
• Web applications:
 Microsoft: ASP, ASP.NET
 Open source: PHP, JSP, …
Slide 11
4. Database Design
4.1 Database Design from Existing Data
4.2 Database Design from New Systems Development
4.3 Database Design from Redesign
Slide 12
4.1 Database Design from Existing Data
The first type of database
design involves databases
that are constructed from
existing data
Slide 13
This is an important
decision, and based on
a set of rules known
as normalization
(which is covered in
Chapter Three)
Slide 14
4.2 Database Design from New Systems
Development
The second way that databases are designed is from the development of new
information systems
Slide 15
4.3 Database Design from Redesign
Database redesign is
covered in Chapter
Eight, after coverage of
SQL in Chapter Seven
Slide 16
Slide 17