Microsoft SQL Server

MariaDB Server is an open-source relational database developed by a global community with the MariaDB Foundation and MariaDB plc. It began as a fork of MySQL led by members of the original MySQL team and maintains substantial MySQL wire-protocol and syntax compatibility, making it a database backend for applications such as the Magic application builder. The server supports pluggable storage engines including InnoDB, Aria, MyRocks, ColumnStore, Spider, and S3; asynchronous, semi-synchronous, and parallel replication; and Galera synchronous multi-primary clustering. Its SQL features include vector search with a built-in VECTOR type and HNSW indexing, common table expressions, window functions, temporal tables, sequences, JSON functions, GIS, full-text search, role-based access control, pluggable authentication, encryption at rest, and TLS connections. It is licensed under version 2 of the GNU General Public License.

MySQL is an SQL database server developed by the MySQL team at Oracle and used as a supported database backend for the Magic application builder. The MySQL distribution also includes MySQL Cluster, an open-source transactional database for real-time workloads. It is distributed under the licensing terms described in its repository.

PostgreSQL is an open-source relational database management system maintained by the PostgreSQL Global Development Group. It provides SQL-compliant, ACID transactions, MVCC concurrency, and extensibility through custom types, functions and extensions, and is used for general-purpose and enterprise database workloads.

Microsoft Azure is an open cloud computing platform and enterprise infrastructure service used to deploy and operate software. It provides infrastructure as a service, virtual machines, databases, containers, serverless computing, Kubernetes, storage, networking, monitoring, security, analytics, and developer tools. Azure also hosts AI-oriented services for models, machine learning, applications, and agents, and connects AI, data, business context, applications, and agents across an enterprise.

SQLite is a self-contained, serverless, zero-configuration, transactional SQL database engine implemented as a C library. It was created and is primarily maintained by D. Richard Hipp and the SQLite development team and is widely used as an embedded database in applications, devices, and browsers.