tapahtumadata
Tapahtumadata (event data) is data that describes occurrences or happenings within a system or in the physical world. In IT, tapahtumadata records events such as user actions, state changes in software, sensor readings, transactions, or business events. A typical event record includes a timestamp, an event type, a source or origin, a unique event identifier, and a payload containing event-specific details. Event data can carry minimal metadata or rich contextual information and may be generated in real time or batched for later processing.
In practice, tapahtumadata is used both for operational purposes and for analytics. Operationally, logs and events
Key considerations include the distinction between metadata (about the event) and the event payload (the detailed
Common formats for eventdata include JSON, XML, Avro, and Parquet, depending on whether the focus is on