Allows a user to read what a volume contains, both files and directories, in Unity Catalog. USE CATALOG and USE SCHEMA on the parent objects are needed too.
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In the Ultra Transcenders books
Each book explains READ VOLUME in context, with comparison tables and the common traps.
Terms in this definition
- Chat message roles
Labels on chat messages: instructions go under system, the person's input under user, the model's previous answers under assistant, and results returned by a called tool under tool (or function).
- CRUD
Shorthand for create, read, update and delete, the four basic things you do with data. Data-plane roles in Azure Cosmos DB, for instance, authorise those operations on items.
- Volume
Holds non-tabular files sitting in cloud storage under Unity Catalog governance, addressed as
/Volumes/<catalog>/<schema>/<volume>. A volume can be external or managed, andWRITE VOLUMEorREAD VOLUMEdecide who may use it. - CONTAINS
Searches columns with a full-text index for words, phrases, prefixes, inflected forms or synonyms; you use it as a predicate in
WHERE. - Unity Catalog
Azure Databricks' governance solution covering both data and AI in one place, with centralised permissions, auditing, data discovery and lineage.
- Usage privileges
USE CATALOGandUSE SCHEMA: alone they expose no data, yet reaching any object inside requires them, so owners of catalogs and schemas can cap what table owners share.