I installed IBM Rational Quality Manager 188.8.131.52 on the same machine as I installed Rational Requirements Composer before. Some steps from installation tips may be needed.
The official product documentation does not give the exact DB2 command line command. If you use the command from RTC manual, the table creation will fail. This is caused by the pagesize being too small. Use this command to create the database instead:
db2 create database RQM using codeset UTF-8 territory en PAGESIZE 16384