During the hugeness of information we have in our world nowadays, it's now hard to deal with the data in traditional ways. Therefore, specialists have created solutions to deal with the huge amount of data and information. Expert Systems have been created such as data classification. This book specializes in studying the difficulty of data Classification and creates algorithms to Classify Islamic data called EMCAR. It also compares the results of this algorithm's Classification with other algorithms on several issues such as: How accurate results this one is and how fast it is to get to the desired results Using Islamic data.