+**D4e** refers to a designated [Data Element](/wiki/data-element) often found within complex [Information System](/wiki/information-system) architectures. It typically serves as a specific identifier or critical attribute, guiding the flow and organization of related digital processes.
+## See also
+- [Data Processing](/wiki/data-processing)
+- [Metadata](/wiki/metadata)
+- [System Architecture](/wiki/system-architecture)