Valentina Server
Datomic
MarkLogic Server
Firestore
Datahike
Matisse
Oracle TimesTen
SAP MaxDB
CppDB - SQL Connectivity Library
SQLAPI++
Abstract Database Connector
Valentina ServerNo features have been listed yet.
Datomic - The fully transactional, cloud-ready, distributed database
SQLAPI++ - SQLAPI++ is C++ library for accessing SQL databases (Oracle, SQL Server, Sybase, DB2, InterBase, SQLBase, Informix, MySQL, Postgre, ODBC, SQLite, SQL Anywhere).
MarkLogic Server - MarkLogic Server is a multi-model database that has both NoSQL and trusted enterprise data management capabilities.
Abstract Database Connector - Abstract Database Connector is a C/C++ library for making connections to several databases (MySQL...
Firestore - Easily develop rich applications using a fully managed, scalable, and serverless document database.
Datahike - A durable datalog database adaptable for distribution.