Patent attributes
Approaches for preserving customizations made to a data management system. Metadata that identifies a mapping between data fields of one or more data source schemas to columns of one or more data tier schemas is maintained. Each of the one or more data tier schemas stores data retrieved from the one or more data source schemas. Values from the metadata are read to dynamically generate software processes. The software processes may update one or more existing ETL processes to reflect an updated state of the one or more data tier schemas and may generate any new ETL processes required to retrieve data stored in the one or more data source schemas and load the retrieved data into the one or more data tier schemas. Customizations made to portions the data management system are preserved in an automated fashion when new versions of system components are deployed.
