Review Questions

1.What is data?
2.What do you mean by information?
3.What are the differences between data and information?
4.What is database and database system? What are the elements of database system?
5.Why do we need a database?
6.What is system catalog?
7.What is database management system? Why do we need a DBMS?
8.What is transaction?
9.What is data dictionary? Explain its function with a neat diagram.
10.What are the components of data dictionary?
11.Discuss active and passive data dictionaries.
12.What is entity and attribute? Give some examples of entities and attributes in a manufacturing environment.
13.Name some entities and attributes with which an educational institution would be concerned.
14.Name some entities and attributes ...

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