database

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Chapter 1

Database Systems
Database Systems:
Design, Implementation, and Management,
Seventh Edition, Rob and Coronel
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In this chapter, you will learn:
• The difference between data and information
• What a database is, what the different types of databases are, and why they are valuable assets for decision making
• The importance of database design
• How modern databases evolved from file systems Database Systems: Design, Implementation, & Management, 7th Edition, Rob & Coronel

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In this chapter, you will learn (continued):
• About flaws in file system data management
• What the database system’s main components are and how a database system differs from a file system
• The main functions of a database management system (DBMS)

Database Systems: Design, Implementation, & Management, 7th Edition, Rob & Coronel

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Data vs. Information
• Data:
– Raw facts; building blocks of information
– Unprocessed information

• Information:
– Data processed to reveal meaning

• Accurate, relevant, and timely information is key to good decision making
• Good decision making is the key to survival in a global environment
Database Systems: Design, Implementation, & Management, 7th Edition, Rob & Coronel

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Transforming Raw Data into Information

Database Systems: Design, Implementation, & Management, 7th Edition, Rob & Coronel

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Transforming Raw Data into Information
(continued)

Database Systems: Design, Implementation, & Management, 7th Edition, Rob & Coronel

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Transforming Raw Data into Information
(continued)

Database Systems: Design, Implementation, & Management, 7th Edition, Rob & Coronel

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Transforming Raw Data into Information
(continued)

Database Systems: Design, Implementation, & Management, 7th Edition, Rob & Coronel

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Introducing the Database and the DBMS
• Database—shared, integrated computer structure that stores:
– End