What is the difference between OLAP and OLTP?

OLAP (Online Analytical Processing) and OLTP (Online Transaction Processing) are two different approaches to organizing and managing data in a database. 

OLTP is designed to manage transaction-oriented applications, which require fast query performance and efficient data modification operations. It is optimized for insert, update, and delete operations and focuses on maintaining data accuracy and consistency through transactions. In an OLTP system, data is stored in a normalized fashion to minimize redundancy and improve data integrity. 

On the other hand, OLAP is designed for data analysis and business intelligence tasks, which require fast access to aggregated data. It is optimized for complex queries and aggregations and focuses on storing data in a denormalized fashion to improve query performance. In an OLAP system, data is often pre-calculated and stored in a multidimensional data model, such as a cube, to allow for quick access to aggregated data. 

In summary, OLTP is optimized for transactional systems, while OLAP is optimized for data analysis.