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# MariaDB Server
MariaDB Server
is one
of the most widely deployed
open source relational
databases. It
is built
by a global community
of contributors together with
the MariaDB Foundation
and MariaDB plc,
and it powers workloads
from small
applications
to large-scale production systems.
MariaDB began
as a fork
of MySQL, led
by the original MySQL developers,
and it maintains a high degree
of MySQL compatibility. It has since grown
into a
database with its own capabilities, including native vector
search,
multiple pluggable storage engines, synchronous clustering,
and analytical
features,
while remaining a straightforward migration target
for existing
MySQL deployments.
## Key features
* **Native vector search**. A built-in VECTOR data type with approximate
nearest-neighbour indexing (HNSW), available since MariaDB
11.
8 with
no extension required.
* **Pluggable storage engines**. InnoDB (default for transactional workloads),
Aria, MyRocks, ColumnStore
for analytics, Spider
for sharding,
and S3
for archival, among others.
* **Replication and clustering**. Asynchronous, semi-synchronous, and
parallel replication with global
transaction IDs, plus Galera synchronous
multi-primary clustering.
* **Advanced SQL**. Common table expressions and recursive CTEs, window
functions, system-versioned (temporal)
tables, sequences,
and a broad
set
of JSON functions.
* **MySQL and Oracle compatibility**. Wire-protocol and syntax compatibility
with MySQL, plus an Oracle
SQL mode supporting PL/
SQL-style stored routines.
* **Spatial and full-text search**. GIS data types and functions, and built-in
full-
text indexing.
* **Security**. Role-based access control, pluggable authentication (ed25519,
PAM, GSSAPI,
and more),
data-
at-rest encryption,
and TLS
for connections.
## Documentation
* [Project home, community, and getting involved](https://mariadb.org)
* [Reference manual and release notes](https://mariadb.com/docs/)
* [MariaDB compared to MySQL](https://mariadb.com/docs/release-notes/community-server/about/compatibility-and-differences/mariadb-vs-mysql-features)
## Releases
MariaDB Server follows a yearly long-term support (LTS) model alongside
quarterly rolling releases.
Binary LTS releases are maintained
for three years
and are recommended
for production; rolling releases deliver new features
sooner with a shorter support
window.
For the current version
and full history, see
[Releases](
https://github.com/MariaDB/server/releases) and
the [MariaDB release calendar](
https://mariadb.org/mariadb/all-releases/).
## Installing
Packages
and installation instructions
for all supported platforms are
available
at [
https://mariadb.org/download/](https://mariadb.org/download/).
## Building
from source
To build MariaDB
from source
and run the test suite, follow the
[developer guide](
https://mariadb.org/get-involved/getting-started-
for-developers
/get-code-build-test/)
It covers building the code correctly, running the MariaDB testing framework,
and choosing the right branch to target for contributions.
## Contributing
Contributions are welcome, from code and documentation to bug reports and
reviews. See [CONTRIBUTING.md](CONTRIBUTING.md) to
get started, and [CODING_STANDARDS.md](CODING_STANDARDS.md)
for code style. Contributors and community members are recognised in
[CREDITS](CREDITS).
## Getting help
* [Zulip chat](https://mariadb.zulipchat.com/)
* [Maria Discuss mailing list](https://lists.mariadb.org/postorius/lists/discuss.lists.mariadb.org/)
* [Bug reports](https://jira.mariadb.org)
* Security vulnerabilities: see [SECURITY.md](SECURITY.md)
## Licensing
MariaDB Server is licensed under version 2 of the GNU General Public
License (GPLv2), without the "any later version" clause. This is inherited from
MySQL. License information is in the [COPYING](COPYING)
file, and third-party license information is in the
[THIRDPARTY](THIRDPARTY) file.
## About MariaDB Foundation
MariaDB is brought to you by the MariaDB Foundation and MariaDB plc.
The MariaDB Foundation is the custodian of the MariaDB Server codebase,
ensuring it stays open and that anyone can contribute.
See [CREDITS](CREDITS) for details on the Foundation
and the people developing MariaDB.
MySQL, the base of MariaDB, is a product and trademark of Oracle Corporation, Inc.