Definition
Replicated data (also called downstream data) are copies of master dataThe authoritative source data in a System of Record (Master) - data owned, maintained and edited in one place, from which all other systems retrieve copies. retrieved from a System of Record (Master) and stored in a receiving system - typically called a Slave system, Replica, or System of Engagement. The receiving system uses the data operationally (for example in customer service or billing) but does not have the authority to change it. All changes to the data must occur in the master source, and then propagate to the Slave systems via synchronisation or integration. Examples in the energy sector: a grid companyCompany that owns and operates electricity grids and is responsible for power supply to end users. retrieves metering pointThe fundamental unit in Elhub - the unique point in the electricity network where energy is measured and settled, identified by an 18-digit GSRN number. data from ElhubNational hub for metering data and market processes in the Norwegian electricity market. (master data) into its CIS (replicated data); a reporting tool retrieves customer data from the CIS (master data for that system) into its own databaseOrganised collection of structured information stored and accessed electronically - foundation of all digital systems. (replicated data). Replication always involves latency and the risk of data drift - meaning the replica may go out of sync with the source.