DBMS-CHAPTER-1 NOTES, Cheat Sheet of Database Management Systems (DBMS)

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UNIT -1 INTRODUCTION TO BASIC CONCEPTS OF DATABASE SYSTEMS What is Data? The raw facts are called as data. The word “raw” indicates that they have not been processed. Ex: For example 89 is the data. What is information? The processed data is known as information. Ex: Marks: 89; then it becomes information. What is Knowledge? 1. Knowledge refers to the practical use of information. 2. Knowledge necessarily involves a personal experience. DATA/INFORMATION PROCESSING: The process of converting the data (raw facts) into meaningful information is called as data/information processing. When When Data Information Knowledge Prpcessed Processed Note: In business processing knowledge is more useful to make decisions for any organization. DIFFERENCE BETWEEN DATA AND INFORMATION: DATA INFORMATION 1.Raw facts 1.Processed data 2. It is in unorganized form 2. It is in organized form 3. Data doesn’t help in)3. Information § helps in decision decision making process making process