wehub-resource-sync
21 lines
982 B
Markdown
21 lines
982 B
Markdown
# Virtual Servers
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Perspective's Virtual Server feature lets you connect `<perspective-viewer>` to
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external data sources without loading data into Perspective's built-in engine.
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Instead, queries are translated and executed natively by the external database.
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For a detailed explanation of how virtual servers work, see the
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[Virtual Servers](../../explanation/virtual_servers.md) concepts page.
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Perspective ships with built-in virtual server implementations for:
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- [**DuckDB**](./virtual_server/duckdb.md) — query DuckDB databases using the
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`duckdb` Python package.
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- [**ClickHouse**](./virtual_server/clickhouse.md) — query a ClickHouse server
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using the `clickhouse-connect` Python package.
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- [**Polars**](./virtual_server/polars.md) — query in-memory Polars DataFrames
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using the `polars` Python package.
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You can also [**implement your own**](./virtual_server/custom.md) virtual server
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to connect Perspective to any data source by subclassing `VirtualServerHandler`.
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