H2database

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h2database is an embeddable RDBMS written in Java, offering fast performance and a small footprint. It supports both embedded and server modes, along with in-memory and disk-based databases.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is h2database?

h2database is an open-source relational database management system (RDBMS) written entirely in Java. It provides a versatile solution for various database needs, supporting both embedded and server modes, as well as disk-based and in-memory databases. Key features include transaction support, multi-version concurrency control, and a convenient browser-based console application for management. Designed for high performance and a minimal footprint, the entire jar file size is around 2.5 MB. It also offers JDBC API compatibility, encrypted databases, fulltext search capabilities, and an ODBC driver, making it a comprehensive and flexible choice for Java-based applications requiring a robust database solution.

Best used for

Ideal for developers who need a lightweight and fast relational database for Java applications, creating embedded database solutions, and managing data with a browser-based console. Especially valuable for projects requiring a small footprint and flexible deployment options.

Common actions

manage databases

develop applications

store data

query data

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Capabilities

Key features

Embeddable RDBMS
Server modes
In-memory databases
Transaction support
Browser-based Console
Fulltext search
JDBC API

Target Audience

developer

Integrations

Not yet documented

Pricing & Plans

Open Source

Free

FAQs

What are the primary deployment modes supported by h2database?

h2database supports both embedded and server modes. In embedded mode, the database runs within the application's JVM, while server mode allows multiple applications to connect to a single database instance, providing flexibility for various architectural needs.

Can h2database be used for in-memory databases?

Yes, h2database can be configured to run entirely in-memory, which is ideal for fast testing, temporary data storage, or scenarios where data persistence is not required across application restarts. It also supports disk-based storage for persistent data.

Does h2database offer a graphical user interface for management?

Yes, h2database includes a browser-based Console application. This console allows users to manage databases, execute SQL commands, and view data directly through a web browser, simplifying database administration and development tasks.

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