Data Warehouse A data warehouse is a crucial component in the decision-making process for many organizations. It is a centralized repository of data that is specifically designed for efficient querying and analysis of data for business intelligence purposes. The data in a data warehouse is typically organized in a multidimensional schema, such as a star schema or a snowflake schema, which enables fast and efficient querying of data. Data warehouses store large amounts of historical data from various sources, such as transactional databases, log files, and external data sources. This historical data is used to provide a single source of truth for decision-makers in an organization, and helps support decision-making processes by providing valuable insights into past trends and patterns. One of the key benefits of a data warehouse is its ability to handle large amounts of data. Data warehouses are optimized for query performance through techniques such as indexing, denormaliza...