| db3 | Berkeley DB3 Database |
| db4 | dBASE IV Database |
| dba | Steinberg WaveLab Audio Database |
| dban | DBAN Data |
| dbas | AQUA Database |
| dbb | Skype Binary Log File |
| dbc | Microsoft Visual FoxPro Database |
| dbc | DAZ Studio Brick Camera |
| dbdif | DatabaseSpy Comparison Data |
| dbe | ActiveSync Backup |
| dbg | SOBEK Debug Data |
| dbgconf | Keil ULINK2 Debug Configuration Data |
| dbheader | Download Boost Header Data |
| dbi | Treepad Database DBI Data |
| dbin | ACDSee Pro Database |
| dbits | XYplorer Hash Data |
| dbk | dBASE Database Backup |
| dbk | Treepad Database Backup |
| dblib | Altium Designer Database Library |
| dbm | DAZ Studio Brick Material |
| dbn | Racelogic PerformanceBox Binary Data |
| dbo | DB/TextWorks Database Directory |
| dbq | Autodesk AutoCAD Query Set |
| dbq | SmartWare Backup Query Definition Data |
| dbr | DB/TextWorks Database |
| dbs | SQLBase Database |
| dbs | Microsoft SNA Server Database |
| dbs | DB/TextWorks Textbase Structure Data |
| dbsdif | Altova DiffDog Schema Comparison Data |
| dbt | Autodesk AutoCAD DBConnect Template |
| dbtmsg | DB/TextWorks Messages Textbase |
| dbu | Client-Course Manager Database Expansion Update |
| dbv | dBase Database Variable Field |
| dbw | Alfrin Pedigree Database |
| dbwal | iOS CalDAV Temporary Sync Data |