Apa itu System of record, golden source?

The system of record of a dataset is the one system whose copy is authoritative: corrections are made there and nowhere else, and every other copy is derived from it. A golden source is a system of record that the firm designates for a kind of data used across many systems (instruments, counterparties, closing marks), so that every consumer reads from it or from a copy that the map shows to be derived from it.