A physical data object that uses a relational table, view, or synonym as a source. For example, you can create a relational data object from an Oracle view.

Depending on the object type, you can add a relational data object to a mapping or mapplet as a source, a target, or a Lookup transformation.

A physical data object that uses one or multiple related relational resources or relational data objects as sources. Relational resources include tables, views, and synonyms. For example, you can create a customized data object from two Microsoft SQL Server tables that have a primary key-foreign key relationship.

Create a customized data object if you want to perform operations such as joining data, filtering rows, sorting ports, or running custom queries in a reusable data object.