picoSQL is a disk-oriented, relational DBMS that supports SQL.
The last release of picoSQL was in 2006. There has not been any update since then.
Shared-Everything
Relational
N-ary Storage Model (Row/Record)
SQL
Disk-oriented
http://www.picosoft.it/picosql/
http://www.picosoft.it/picosql/doc/index.html
picoSoft
IT
2006
Commercial, Open Source
AIX, HP-UX, Linux
GPL v2
https://it.wikipedia.org/wiki/PicoSQL