Introduction to Database Systems

CHAPTER 1

DATABASE SYSTEM

After reading this chapter, the reader will understand:

• The basic concept of database and database management system
• The need of database system
• Limitations of traditional file processing system that led to the development of database management system
• Advantages of database system
• Various developments in the field of database system
• Areas where the database system is used
• Cost and risk involved in database system
• Different types of individuals that interact with the database system
• The concept of database schema and database instance
• Three-level DBMS architecture, which provides the abstract view of the database
• The concept of data independence, which helps the user to change the schema at one level of the database ...