Its stand for "Photoshop Data file"
dd is an abbreviation for "data definition." It is often jokingly said to stand for "destroy data."
Data
it refers to Logistic data !
remote data object
Data Output Interface
Data base
Video Data Toolkit
Data ONTAP is the name for a data storage operating system, which offers a unified platform for storing files and other information. ONTAP in the name doesn't actually stand for anything specific, though.
It can stand for both: Homeland Security Presidential Directive and High Speed Packet Data
LDAP data interchange format
Tracking and Data Relay Satellite