Findings:

• DB/C
• SPL (user)
• SPL meter
• spl
• DB NachtZug
• d.b (user)
• Berkeley DB
• D.B. Wilson's method of technical lyrics analysis
• dbs (user)
• Microsoft OLE DB Data Shaping Provider
• The dB's
• D@B (user)
• db cooper (user)
• db (user)
• D.B. Cooper
• D&B
• Db

If you Log in you could create a "dB SPL" node. If you don't already have an account, you can register here.