+[Data virtualization with Azure SQL Managed Instance](data-virtualization-overview.md) enables you to execute Transact-SQL (T-SQL) queries against data from files stored in Azure Data Lake Storage Gen2 or Azure Blob Storage, and combine it with locally stored relational data using joins. Parquet and delimited text (CSV) file formats are directly supported. The JSON file format is indirectly supported by specifying the CSV file format where queries return every document as a separate row. It's possible to parse rows further using `JSON_VALUE` and `OPENJSON`. For general information about PolyBase, see [PolyBase](/sql/relational-databases/polybase/polybase-guide).
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