Help Center> MapReduce Service> Developer Guide (2.x and Earlier)> Presto Application Development> Overview> Basic Concepts
Basic Concepts
- Connector
A connector adapts Presto to a data source such as Hive or a relational database.
- Catalog
A Presto catalog contains schemas and references a data source via a connector.
- Schema
Schemas are a way to organize tables.
Parent topic: Overview
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