Materialized views

Materialized views are like saved snapshots of data from a database, created to speed up complex queries. Instead of generating results in real-time each time you ask, a materialized view stores pre-computed results. This makes data retrieval faster since you’re accessing a prepared version instead of recalculating everything from scratch. However, because data changes over time, materialized views need to be refreshed periodically to ensure that they remain accurate and up-to-date. They are useful in reporting and data analysis, where quick access to historical or aggregated data is essential.