I have seen them mentioned but don't know what they are or what they're for.
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[ Editor ]
OK, I found out more details. The R.DBs are:
- R.Db - Boundless Creations
- R.Db - Carthum Conglomerate
- R.Db - Core Complexion
- R.Db - CreoDron
- R.Db - Duvolle Labs
- R.Db - Ishukone
- R.Db - Kaalakiota
- R.Db - Khanid Innovation
- R.Db - Lai Dai
- R.Db - Roden Shipyards
- R.Db - Thukker Mix
- R.Db - Viziam
The descriptions of each R.DB are
A searchable database of the corporations scientific research. Used in BP copying as well as material and time efficiency BP research.
and they are required for material efficiency, production efficiency research and the creation of blueprint copies of Tech II blueprints, so not really very useful for most players.
The only Tech I module that requires R.DBs are the Prototype Cloaking Device I, which requires R.DBs from CreoDron and Ishukone for ME, PE and copying.

I’m guessing the letters R.Db are supposed to represent “Research Database”