Definitions for "Source System"
Keywords:  morphism, semiotic, alg, etl, sem
An operational system, or ODS that is used as the source or input to the ETL process.
alg. sem.] A sign system describing a source space; the "input" domain of a semiotic morphism.
The system from which you are upgrading (that is, your system as it exists before you upgrade).
The system of record or the system that contains the operational data that is to be extracted and loaded into the DW.
a production database that contains source tables for which Change Data Capture will capture changes
A database, application, file, or other storage facility from which the data in a data warehouse is derived.