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Flight RPC and Flight SQL clients are language-specific drivers that interact with databases using the Arrow in-memory format and the Flight RPC protocol. Apache Arrow Flight RPC and Flight SQL protocols define APIs for servers and clients.
[!Note]
Use InfluxDB 3 client libraries
We recommend using InfluxDB 3 client libraries for integrating InfluxDB 3 with your application code. Client libraries wrap Apache Arrow Flight clients and provide convenient methods for writing, querying, and processing data stored in {{% product-name %}}.
Flight RPC clients can use SQL or InfluxQL to query data stored in an {{% product-name %}} database.
Using InfluxDB 3's IOx-specific Flight RPC protocol, clients send a single DoGet() request to authenticate, query, and retrieve data.
Flight SQL clients use the Flight SQL protocol for querying an SQL database server. They can use SQL to query data stored in an {{% product-name %}} database, but they can't use InfuxQL.
Clients are maintained by Apache Arrow projects or third-parties. For specifics about a Flight client, see the client's GitHub repository.
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