10 Excellent Free Linux Relational Databases

A relational database matches data using common characteristics found within the data set. The resulting groups of data are organized and are much easier for people to understand. In such a database the data and relations between them are organized in tables. A table is a collection of records and each record in a table contains the same fields. Certain fields may be designated as keys, which means that searches for specific values of that field will use indexing to speed them up.

The term relational database was originally defined by Edgar Codd, a British computer scientist, whilst working at IBM Almaden Research Center. He recognized that the concept of a relational database could be derived from the principles of relational algebra and relational calculus.

A Relational Database Management System (RDBMS) is a Database Management System (DBMS) that is based on the relational model. Most database systems today are based on this type of system.

A database is a vital system for any organization that stores mission critical information. The continual failure of a company’s database system can only lead to the demise of the organization – companies cannot do business without a working database system.

To provide an insight into the quality of software that is available, we have compiled a list of 10 open source RDBMS. Hopefully, there will be something of interest here for anyone who wants to store data in an efficient way.


Now, let’s explore the 10 open source RDBMS at hand. For each title we have compiled its own portal page, a full description with an in-depth analysis of its features, together with links to relevant resources

Relational Databases
MySQLMultithreaded, multi-user SQL database management system
MariaDBSeeks high compatibility with MySQL, ensuring drop-in replacement capability
PostgreSQLAward winning Object-relational database management system
SQLiteEmbeddable SQL Database Engine
FirebirdRelational database offering many ANSI SQL features
LucidDBPurpose-built entirely for data warehousing and business intelligence
H2Relational database management system written in Java
HSQLDBJDBC interface, client-server version, query tool, grid and more
Apache DerbyFull-featured relational database implemented entirely in Java
VirtuosoData Management with Web Application Server and Web Services Platform
CUBRIDDatabase engine with built-in enterprise grade features

There are many excellent database systems that are closed source free to download applications. Worthy of particular note are DB2 (a real heavyweight by IBM), Oracle Database 18c (developed by Oracle Corporation), and MaxDB (capable of running terabyte-range data in continuous operation).

Best Free and Open Source SoftwareRead our complete collection of recommended free and open source software. Our curated compilation covers all categories of software.

The software collection forms part of our series of informative articles for Linux enthusiasts. There are hundreds of in-depth reviews, open source alternatives to proprietary software from large corporations like Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk.

There are also fun things to try, hardware, free programming books and tutorials, and much more.
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Gerardo Muñoz
Gerardo Muñoz
1 year ago

Mysql is not free any More for people banned by OracleCorp, cause of communist maduro’s goverment

1 year ago
Reply to  Gerardo Muñoz

You are not correct, MySQL is open source, licensed under GNU GPL v2. There is also a proprietary license.