WonderDB is a transactional single-node DBMS written in Java.
The last update to the source code was in 2015.
Physical Logging
Shared-Everything
Disk-oriented
N-ary Storage Model (Row/Record)
Relational
B+Tree Hash Table
SQL
http://wonderdb.org/
https://github.com/dreamdbvilas/wonderdb
http://wonderdb.org/?portfolio=high-level-architecture-2
Vilas Athavale
US
2013
2015
Open Source
Java