Data Warehouse

Data Warehouse is a specialized system or database designed to collect, store and manage large volumes of historical data from various sources within a company. The main purpose of Data Warehouse is to consolidate disparate data from different systems (accounting, logistics, sales, etc.) in a single place to provide convenient and efficient access to them for analytics, report building and management decision support.

Key features of Data Warehouse:

• Subject-oriented - data is organized by business area, not by application.
• Integration - combining data of different nature and formats into a single standardized view.
• Immutability - data in the warehouse is not changed or deleted, but only added, which ensures analytics stability.
• Chronology support - each record is time-stamped, allowing time-based data analysis.

Key features and applications:

• Combining data from different systems to get a holistic picture of the business.
• Prepare and automate consolidated reports and dashboards.
• Provide data for analysis, forecasting and building machine learning models.
• Reducing the load on operational systems by separating analytical processing from transactional databases.

Key functions of Data Warehouse in business include:

• Data consolidation and integration
  Data Warehouse integrates data from various sources (CRM, ERP, financial systems, etc.) into one centralized system, providing a holistic view of the business.
• Improved data quality and consistency
  During the loading process, data is cleaned, normalized, duplicates are removed and errors are corrected, improving the quality of information for analysis.
• Storing historical data
  DWH stores large amounts of historical data, allowing you to analyze trends and changes in metrics over time, which is not possible in operational databases.
• Optimized analytics and reporting
  The data warehouse is optimized to run complex queries and reports, reducing the load on operational systems and accelerating analytical insights.
• Management Decision Support
  DWH provides management and analysts with accurate, consistent, and relevant data for informed decision making and strategic planning.
• Automate and accelerate business processes
  Data Warehouse automates the collection and processing of information, reducing reporting time and increasing employee efficiency.
• Integration with BI tools and advanced analytics
  DWH serves as a foundation for business intelligence, including data visualization, pattern mining (Data Mining), application of artificial intelligence and machine learning to identify new opportunities in the market.

Thus, Data Warehouse helps businesses to centrally store, cleanse and analyze data from different sources, providing high quality information and supporting effective management decision making.