1. Administering and Working with Oracle Enterprise Data Management Cloud
  2. Administration
  3. Understanding Data Sources

25 Understanding Data Sources

Data sources represent logical source systems for nodes.

They are used in the following ways in Oracle Enterprise Data Management Cloud:

  • They establish links between nodes. When you bring a node in (through interactive requests, request file uploads, subscription requests, viewpoint loads, or merge imports), if the incoming node is updating an existing node the data source on the incoming node establishes a link between those nodes. See Viewing Node Links.
  • They identify which matching rules to use when matching request items. When you create request items that you want to match on, the data sources that you assign to them determine the matching rules that are used for the match. See Working with Matching and Merging.
  • They identify the survivorship rule to use when merging properties and relationships for accepted matches. See Creating, Editing, and Deleting Survivorship Rules.

There are two types of data sources:

  • Registered data sources represent other Oracle Enterprise Data Management Cloud applications. They are created automatically when you register an application in Oracle Enterprise Data Management Cloud.
  • Unregistered data sources are manually created (see Creating, Editing, and Deleting Data Sources) to represent other external systems and files that you want to bring data in from.

Specifying Data Sources for Request Items

There are a number of ways to specify a data source for request items:

  • Request items that are generated from other Oracle Enterprise Data Management Cloud applications (for example, from viewpoint compare requests or subscriptions) are automatically assigned the registered data source for that application.
  • For request file uploads, use the Data Source column to identify the data source for each request item in the file. The data sources that you specify are assigned to the nodes when the request file is uploaded. See Request Load File Format.
  • You can specify a default data source for a defined viewpoint load. During viewpoint load, each request item created in the load request is populated with the name of the data source that you specified. See Creating, Editing, Copying, and Deleting Loads