Data Warehousing

Data warehousing is the process of collecting, storing, and managing large volumes of structured and semi-structured data from multiple sources for analytical purposes. Marketing data warehouses consolidate information from CRM systems, website analytics, social media platforms, and advertising tools. Effective data warehousing requires ETL (Extract, Transform, Load) processes, data cleansing, and proper schema design. Benefits include faster query performance, historical trend analysis, and the ability to perform complex cross-channel analysis. Modern data warehouses like Google BigQuery, Snowflake, and Amazon Redshift support real-time data ingestion and advanced analytics.