BCA / B.Tech 5 min read

Difference Between Data Warehouse & View

Difference Between Data Warehouse & View in RDBMS:

What is a View?
A View is a virtual table whose content is defined by a query. A view does not store data itself; it is a stored query that dynamically retrieves data from one or more underlying tables when accessed. Views are often used to simplify complex queries, provide a level of security by restricting access to data, or present data in a different format.

Key Differences:
  • Data Storage: A Data Warehouse physically stores large volumes of historical data. A View is a virtual table and does not store any data itself.
  • Purpose: A Data Warehouse is designed for large-scale data analysis and business intelligence. A View is primarily used to simplify data access, provide security, and present data in a specific way.
  • Data Structure: A Data Warehouse contains integrated and transformed data from various sources. A View simply provides a window into the current data of the underlying tables.
  • Data Perspective: A Data Warehouse provides a historical perspective of data over time. A View provides a current, real-time perspective of the data in the tables it is based on.