DATABASE PRINCIPLES
Fundamentals of Design, Implementation and Management
Objectives
In this chapter you will learn:
The difference between data and information
what a database is, the various types of databases, and why they are valuable assets for decision making
the importance of database design
main component of the database system
main functions of a DBMS
Why Databases?
Imagine trying to operate a business without knowing who your customers are, what products you are
selling, who is working for you, who owes you money and to whom you owe money?
collection,
storage,
aggregation,
manipulation,
dissemination,
management of data.
3
Why Databases?
How can these businesses process this much data?
How can they store it, and then quickly retrieve?
collection,
, storage,
aggregation,
manipulation,
dissemination,
management of data.
4
The answer is that the use of database.
Database
Database are specialized structures that allow computer-based systems to store, manage and
retrieve data very quickly.
Data vs. Information
Good decisions require good information that is derived from raw facts. These raw facts are known as
data.
Information refers to processed data to reveal its meaning.
Knowledge
relevant and objective information that helps in drawing conclusions.
8
Key points
Data constitute the building blocks of information.
Information is produces by processing data.
Information is used to reveal the meaning of data.
Accurate, relevant and timely information is the key to good decision making.
Good decision making is the key to organizational survival in a global environment.
Fundamentals of Design, Implementation and Management
Objectives
In this chapter you will learn:
The difference between data and information
what a database is, the various types of databases, and why they are valuable assets for decision making
the importance of database design
main component of the database system
main functions of a DBMS
Why Databases?
Imagine trying to operate a business without knowing who your customers are, what products you are
selling, who is working for you, who owes you money and to whom you owe money?
collection,
storage,
aggregation,
manipulation,
dissemination,
management of data.
3
Why Databases?
How can these businesses process this much data?
How can they store it, and then quickly retrieve?
collection,
, storage,
aggregation,
manipulation,
dissemination,
management of data.
4
The answer is that the use of database.
Database
Database are specialized structures that allow computer-based systems to store, manage and
retrieve data very quickly.
Data vs. Information
Good decisions require good information that is derived from raw facts. These raw facts are known as
data.
Information refers to processed data to reveal its meaning.
Knowledge
relevant and objective information that helps in drawing conclusions.
8
Key points
Data constitute the building blocks of information.
Information is produces by processing data.
Information is used to reveal the meaning of data.
Accurate, relevant and timely information is the key to good decision making.
Good decision making is the key to organizational survival in a global environment.
