FIRST TERM E-LEARNING NOTE   SUBJECT: DATA PROCESSING CLASS: SS3   SCHEME OF WORK   WEEK TOPIC REVISION INDEXES:- Definition, Clustered versus Unclustered indexes INDEXES:- Dense versus Sparse, Primary and Secondary Indexes, Indexes using Composite Search Keys MAINTENANCE OF COMPUTER:- Computer Hardware, Process Of Maintaining Hardware MAINTENANCE OF COMPUTER:- Procedure for Software Maintenance,