The metadata pattern of an adapter describes the metadata structure of the native data source. You can choose a metadata pattern template to define the metadata pattern of an adapter.
A metadata pattern template is a set of packages such as catalog, container, flat record, and so on. Sets of related classes that define the metadata pattern are organized as packages.
Though an adapter can have more than one metadata pattern, the Informatica Connector Toolkit currently supports only Type A template. The type A template provides the metadata patterns for flat records. You can use the metadata catalog that the Type A template provides to describe the metadata structure of the data source.