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MySQL, the most popular Open Source SQL database management system, is developed, distributed, and supported by Oracle Corporation.
hsqldb is a relational database engine written in Java with a JDBC driver that supports a subset of ANSI SQL:1999. It offers a small, fast database engine. Embedded and server modes are available. It includes tools such as a minimal Web server, in-memory query and management tools (which can be run ... [More]
Firebird is a relational database offering many ANSI/ISO SQL standard features that runs on Linux, Windows, and a variety of Unix platforms. Firebird offers excellent concurrency, high performance, and powerful language support for stored procedures and triggers. It has been used in production ... [More]
db4o is an object database available for Java and for .NET, including CompactFramework and Mono. Features include ACID transactions, automatic class schema recognition, Native Queries, query-by-example, S.O.D.A. object querying API, callback methods, memory files, cascade-on-delete and ... [More]
Ingres Database is the open source database management system that can reduce IT costs and time to value while providing the strength and features expected from an enterprise class database. Ingres Database is a leader in supporting business critical applications and helping manage the most ... [More]
Neo4j is a graph database. It is an embedded, disk-based, fully transactional Java persistence engine that stores data structured in graphs rather than in tables. A graph (mathematical lingo for a network) is a flexible data structure that allows a more agile and rapid style of development.
Apache Xindice is a database designed from the ground up to store XML data or what is more commonly referred to as a native XML database.
Java Desktop SQL Database Engine with JDBC 3.0 API. SmallSQL is small, fast, embeddable, SQL 99 conformance, platform independent and 100% pure Java
Internet graph database. Represents information as nodes and edges, which may carry properties and may be typed. Selection of storage backends including MySQL, Postgresql, native files and NoSQL. Optional components map URLs directly to objects in the graph database with custom rendering via the ... [More]
This is a fork of SQLite adapted to use the Lightning DB. The object code is 50KB smaller and much faster than SQLite.