a) Define the following terms explaining their meaning i) Business Intelligence [2 marks] ii) Data Warehouse [2 marks] iii) Data Mining [2 marks] iv) Decision Tree [2 marks] v) Web Mining [2 marks] b) Using appropriate diagrams, describe the Business Intelligence data processing chain. [6 marks] c) What are the key elements of a data warehouse? Describe each. [8 Marks]

Q1. a) Define the following terms used in business intelligence: i. Business intelligence: Business intelligence (BI) refers to technologies, applications, and practices for the collection, integration, analysis, and presentation of business information. It enables organizations to make informed business decisions [1]. ii. Data warehouse: A data warehouse is a large, centralized repository of data that is used for reporting and data analysis. It is designed to support business intelligence activities and decision-making processes [1]. iii. Data mart: A data mart is a subset of a data warehouse that is tailored to the needs of a specific department or group within an organization. It contains data relevant to a particular subject area or business process [1]. iv. Knowledge discovery: Knowledge discovery in data mining is the process of exploring and analyzing large amounts of data to discover significant patterns, rules, and insights. It helps in finding knowledge from raw, unprocessed data [15].