Download QuestDB JDBC Driver

Download the QuestDB JDBC driver, copy the JDBC URL into DbSchema, and start designing schemas with ER diagrams — free Community Edition.

Connect QuestDB in DbSchema Install the driver, open a connection, reverse engineer your schema, and sync changes visually.
QuestDB guide Free Download

About the QuestDB JDBC driver

A JDBC driver is a Java .jar library that lets applications connect to QuestDB. DbSchema uses JDBC to reverse engineer schemas, run SQL, and generate documentation. Driver files are usually published by the database vendor or an open-source project.

JDBC URL format

Host, port, database name, and SSL options are passed in a URL starting with jdbc:. Each QuestDB driver uses its own syntax — see the connection details below.

The QuestDB JDBC driver

QuestDB is a high-performance open-source time-series database designed for high-throughput ingestion (millions of rows per second) and fast SQL queries. It uses a column-based storage model and is optimized for financial tick data, IoT telemetry, and observability metrics.

QuestDB is compatible with the PostgreSQL wire protocol, so DbSchema connects using the PostgreSQL JDBC driver.

The QuestDB JDBC URL

  • Required File(s): postgresql-nn.jdbc3.jar
  • Java Driver Class: org.postgresql.Driver
  • JDBC URL: jdbc:postgresql://HOST[:PORT]/DB
  • Website: QuestDB

Download PostgreSQL-compatible JDBC Driver for QuestDB

The driver archive is a zip file. Extract it and load the .jar files using DbSchema's Driver Manager.

DbSchema and QuestDB

DbSchema connects to QuestDB using the PostgreSQL-compatible JDBC driver and renders QuestDB tables with designated timestamp columns and partition strategies in the schema diagram.

Test the driver with DbSchema

Connect QuestDB, build your first ER diagram in minutes. No account required.

1
Download driver & DbSchema

Get the QuestDB driver zip below and install DbSchema for Windows, macOS, or Linux.

2
Register the .jar

In DbSchema, open Driver Manager, add the extracted JAR, and paste your JDBC URL.

3
Design & document

Reverse engineer QuestDB, edit the model visually, and publish schema documentation.

Free DbSchema Download

Use QuestDB visually in DbSchema

After the JDBC driver connects, you get ER diagrams, SQL editor, schema sync, and HTML documentation in one desktop app. Compare DbSchema editions.

ER diagrams

Reverse engineer QuestDB into an interactive diagram and edit structures visually.

SQL & query builder

Run SQL with autocomplete or compose queries without writing every join by hand.

Schema documentation

Export HTML docs your team can browse without installing DbSchema.

Full QuestDB guide

Connection tips, ports, SSL, and schema design workflows on the database landing page.

QuestDB guide

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