Knowledge base is gaining popularity as a customer support tool. Customers search the knowledge base for solutions to their issues. Keywords searched in knowledge base are analyzed and reports are made available for managers and supervisors to understand the trends and requirements of customers. The number of keywords searched can be extremely large in some organizations. In this specification, storing the keywords in a meaningful way in order to generate report for further analysis is discussed. Efficient data storage helps in managing voluminous data and also reducing the amount of memory required to store the data. Any of the above embodiments can be used independently or together with any combination of other embodiments.