1* Discuss the difference between data, information, database and DBMS? Give example from your work or experience and identify the four components.
2. What is data redundancy? How can it be avoided?
Identify and discuss the serious data redundancy problems exhibited by the file
structure shown in Figure below. (The file is meant to be used as a teacher class
assignment schedule. One of the many problems with data redundancy is the likely
occurrence of data inconsistencies—two different initials have been entered for the
teacher named Maria Cordoza.)
3. What are business rules? Give some examples. Describe the relationships (identify the business rules) depicted in the Crow’s Foot ERD shown in Figure below
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