Firebird server, client and tools

MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.

Documentation for CUBRID RDBMS

SQL job scheduler

NITCbase: An eight-layer designed RDBMS with basic capabilities including relational selection queries and B+ tree indexing. It supports elementary SQL queries: CREATE, DROP, ALTER, INSERT, SELECT, PROJECT, and EQUI-JOIN. Note: NITCbase does not support concurrency.

A step-by-step implementation roadmap of the project guides you through various stages of implementation of the RDBMS.

A relational database implementation written in C++ featuring a file manager, relation manager, index manager, and query engine

A set of short, sharp functions showing a means to handle long doubly linked lists in a useful, readable way.

SQLite-like relational database

BD II final project. Simple Text File Relational Database Management System (RDBMS) implemented in C++.

Galois advertising gtable ddl file parser｜gtable语法解析工具。将ddl文件和gql文件转化为xml文件供后续代码生成。

a simple simulation of a very basic buffer pool management system for an RDBMS using POSIX file I/O

Salsabil is an open source C++ persistence framework provides a unified way to interface with databases and performs object relational mapping (ORM) for your plain old objects.

A Multi-layer Relational Database with optimized storage, query and index systems

Alinous Elastic DB is database for bigdata. It can scale both the SQL engine and storage engine. This database engine is for scaling and sharding.

Relational Database Management System implementation in native C++

FUDLibrary - a user defined function library for Interbase 6