Popular Database file extension list:
.mdb - Microsoft Access database
.accdb - Office Access 2007 database file format
.mdf - Microsoft SQL Server primary datafile
.ipd - InstallPROG 6 EDBS install database
.ldb - MS Access Record-Locking Information
.fdb - Database file
.dbf - Database file
.csv - Comma Separated Value file
file extension PDT - ProCite database
File extension PDT description:
Database file. Probably old file extension or not supported application..pdt
