Data Glossary 🧠
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What is a Push-Down?
Query pushdown aims to execute as much work as possible in the source databases.
Push-downs or query pushdowns push transformation logic to the source database. This reduces to store data physically and transfers them over the network.
For example, a
semantic layer A semantic layer (sometimes also called Headless BI) calculates complex business metrics at query time. It sits between your data... Data Virtualization helps you when you have many source systems from different technologies, but all of them are rather fast... SQL is a standardized language used to interact with relational [databases]]. It stands for structured query language (SQL) and defines a...What is a Semantic Layer
What is Data Virtualization?
What is SQL?
Pushdown optimization increases mapping performance when the source database can process transformation logic faster than the semantic layer itself.