Document JDBC API (#385)

* Document JDBC API

* Fix clients/tableau link

* Apply suggestions from code review

Co-authored-by: Phillip LeBlanc <phillip@spiceai.io>

* Update index.md

---------

Co-authored-by: Jack Eadie <jack@spice.ai>
Co-authored-by: Phillip LeBlanc <phillip@spiceai.io>

Author: 3 people

spiceaidocs/docs/api/jdbc/index.md

@@ -0,0 +1,66 @@
+---
+title: 'JDBC: Java Database Connectivity'
+sidebar_label: 'JDBC'
+sidebar_position: 2
+description: 'JDBC API Documentation'
+pagination_prev: null
+pagination_next: null
+---
+
+[JDBC](https://docs.oracle.com/javase/tutorial/jdbc/basics/index.html) (Java Database Connectivity) is a standard API for connecting to and interacting with databases.
+
+Spice supports JDBC clients through a JDBC driver implementation based on the [Flight SQL](https://arrow.apache.org/docs/format/FlightSql.html) protocol. This enables any JDBC-compatible application to connect to Spice, execute queries, and retrieve data.
+
+## Download and install the Flight SQL JDBC driver
+
+### Download the Flight SQL JDBC driver
+
+- Find the appropriate [Flight SQL JDBC driver](https://central.sonatype.com/artifact/org.apache.arrow/flight-sql-jdbc-driver/versions) version. 
+- Click **Browse**  next to the version you want to download
+- Click the `flight-sql-jdbc-driver-XX.XX.XX.jar` file (with only the `.jar` file extension) from the list of files to download the driver jar file
+
+### Add the driver to your application
+
+Follow the instructions specific to your application for adding a custom JDBC driver. Examples:
+
+**Tableau**:
+    - Windows: `C:\Program Files\Tableau\Drivers`
+    - Mac: `~/Library/Tableau/Drivers`
+    - Linux: `/opt/tableau/tableau_driver/jdbc` - Start or restart Tableau
+
+[Full instruction](/clients/tableau)
+
+**JetBrains DataGrip**:
+
+- In Database Explorer menu, select "+" and choose "Driver"
+- Follow the steps to add the JDBC `.jar` file
+
+[Full instruction](/clients/jetbrains-datagrip)
+
+**DBeaver**:
+
+- In the DBeaver application menu bar, open the "Database" menu and choose: "Driver Manager"
+- Click the "New" button and follow instructions to add JDBC `.jar` file.
+
+[Full instruction](/clients/DBeaver)
+
+## Configure JDBC connection
+
+1. Use the following configuration settings:
+
+- **URL**: `jdbc:arrow-flight-sql://{host}:{port}`
+- **Dialect**: `PostgreSQL`
+
+ For example:
+ <img width="400" src="/img/tableau/tableau-jdbc-conn.png"/>
+
+1. **Ensure Spice is running**
+1. Click **Connect**
+
+Note: Spice has [TLS support](/api/tls). For testing or non-production use cases for Spice without TLS, the following JDBC connection URL will bypass TLS `jdbc:arrow-flight-sql://{host}:{port}?useEncryption=false&disableCertificateVerification=true`.
+
+## Execute Test Query
+
+In the configured application, run a sample query, such as `SELECT * FROM taxi_trips;`
+
+![Query Results](https://imagedelivery.net/HyTs22ttunfIlvyd6vumhQ/0e9f3c0f-2e03-47f9-8d5e-65e078d7e900/public "Query Results")