Database

Introduction
Database Systems: Design, Implementation, and Management
Ninth Edition

Why Databases?
Databases solve many of the problems encountered in selective information management
Used in almost all modern settings involving info management:
Business Research Administration

Chapter 1 Database Systems

Good decisions collect good information derived from raw facts Data is managed most efficiently when stored in a database Databases evolved from computer rouse systems Understanding file system characteristics is important
2

Important to understand how databases work and interact with another(prenominal) applications
3

Data vs. entropy
Data are raw facts tuition is the solvent of processing raw data to breach meaning Information requires context to reveal meaning Raw data must be formatted for storage, processing, and presentation Data are the foundation of information, which is the fundamental principle of knowledge
4

Data vs. Information (contd.



)
Data: building blocks of information Information produced by processing data Information used to reveal meaning in data Accurate, relevant, timely information is the strike to good decision make Good decision making is the key to organizational survival
5

Introducing the Database
Database: shared, integrated computer social organization that stores a collection of:
End-substance abuser data: raw facts of interest to end user Metadata: data about data
Provides description of data characteristics and relationships in data Complements and expands value of data

Database management system (DBMS): collection of programs
Manages structure and controls attack to data
6

Role and Advantages of the DBMS
DBMS is the intermediary between the user and the database
Database structure stored as file collection Can only overture files through the DBMS

Role and Advantages of the DBMS
Advantages of a DBMS:
Improved data sharing Improved data security Better data integration Minimized...If you want to get a full essay, send it on our website: Ordercustompaper.com



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