While this specific string appears in various file-sharing and modding contexts, it generally breaks down as follows:
Often refers to "Beautiful Doom" or a specific texture/model pack creator's initials. BDM-4-11.2 (plus 10.2)-4x.7z
These are version or build numbers for the included assets, likely indicating a cumulative update that includes files from a previous 10.2 iteration. While this specific string appears in various file-sharing