software
OLAP
Online Analytical Processing
Definition
OLAP is a category of database systems optimized for complex analytical queries over large datasets, supporting operations like slicing, dicing, drilling down, and aggregating data across multiple dimensions. Columnar storage formats (Parquet, ORC) and vectorized query execution are key technologies enabling OLAP performance.
Snowflake, BigQuery, and ClickHouse are modern OLAP systems.
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