TOB is excellently distinguished from contemporary database management systems by its unmatchable performance. It is obvious in PolePosition circuit Sepang, where persistent tree structures are traversed. Apparently TOB is the best. See the following data tables for a proof:

Sepang : read
t [time in ms] depth:8
 depth:10
 depth:12
 depth:14
AV5TOB/HSQL 10 0 3 1
AV5TOB/MySQL 0 0 1 2
AV5TOB/H2DB 0 0 0 1
AV5TOB/PgSQL 0 0 1 1
db4o/4.5.200 57 287 282 812
Hibernate/hsqldb 505 678 1974 6291
Hibernate/mysql 147 594 1974 7017
JDBC/MySQL 55 185 742 2733
JDBC/HSQLDB 34 141 568 2287

Sepang : read_hot
t [time in ms] depth:8
 depth:10
 depth:12
 depth:14
AV5TOB/HSQL 0 0 3 1
AV5TOB/MySQL 0 0 0 2
AV5TOB/H2DB 0 0 0 1
AV5TOB/PgSQL 0 0 1 1
db4o/4.5.200 25 28 47 100
Hibernate/hsqldb 6 55 28 18
Hibernate/mysql 1 5 10 36
JDBC/MySQL 45 184 876 2753
JDBC/HSQLDB 34 140 562 2408