When you choose to create or reuse a minischema during the data source connection process, choose which source elements to use to populate your minischema. You may choose all elements or a subset of elements, depending on your business needs.
Relational data sources—Includes relational sources such as Oracle, IBM DB2, Microsoft SQL Server, MySQL, Netezza, Oracle BI EE (Presentation Layer or Business Model option), and Teradata. See Populating a Minischema for Relational Sources.
Flat or text file data sources—See Populating a Minischema for Text File Sources.