3900 Codebook Exchange Format Text (Structured) Codebook Exchange Format (.qdc) is a file format for sharing codes so that they can easily be read by different types of Qualitative Data Analysis software. Files contain an xml header followed by the names of coding categories (name=), and a description (<Description>) of what data goes into that category. They don’t contain the coded data itself. Qdc files help researchers share and interpret information consistently and reliably, and identify patterns in their data. 356 Cabinet Office / Cabinet Office 10 Jan 2025 10 Jan 2025 fmt/2026 PUID qdc File extension 3389 Codebook Exchange Format BOF; Offset: 0-3; Magic Bytes: '<CodeBook xmlns="urn:QDA-XML:codebook:1:0"' and EOF; Offset:0-3; Magic Bytes: '</CodeBook>' 1 Absolute from BOF 38 50 3C436F6465426F6F6B20786D6C6E733D2275726E3A5144412D584D4C3A636F6465626F6F6B3A313A3022 1 Absolute from EOF 0 3 3C2F436F6465426F6F6B3E