Question

1 What is data mining? What are the major issues in data mining? Explain
2 What is meant by data reduction? Explain any three techniques of data reduction
3 Define a border set. Show that every subset of any item set must contain either a frequent set or a border set
4 Describe any five requirements of Clustering in data mining
5 Explain any five differences between operational database systems and data warehouses
6 Discuss the following with suitable examples in the context of Data Cleaning

• Missing Values
• Noisy Data