Recently many applications have been created for categorizing, indexing and retrieving the digital video contents. These applications are used to handle a large quantity of video contents. Due to the restricted man-power, it is much required to develop retrieval methods that automatically extract features from videos and makes use of it. It is a good deal expected to build up the retrieval methods that use the features automatically extracted from videos. These features are nothing but the representation of physical contents such as motion, edge, color etc. The retrieval methods need information of how to integrate/use features for retrieving the exact videos according to the user query.This book further discusses about the basics of indexing, clustering and data mining in the video database.