| Name | Description | Type | Package | Framework |
| AssociationDescriptor | Describes an instance of an Association. | Interface | org.opengis.feature.type | GeoTools |
| AssociationType | The type of an association; used to describe kind of relationship between two entities. | Interface | org.opengis.feature.type | GeoTools |
| AttributeDescriptor | Describes an instance of an Attribute. | Interface | org.opengis.feature.type | GeoTools |
| AttributeType | The type of an attribute. | Interface | org.opengis.feature.type | GeoTools |
| ComplexType | The type of a complex attribute. | Interface | org.opengis.feature.type | GeoTools |
| FeatureType | The type of a Feature. | Interface | org.opengis.feature.type | GeoTools |
| FeatureTypeFactory | Factory for types and descriptors. | Interface | org.opengis.feature.type | GeoTools |
| GeometryDescriptor | Describes an instance of a geometry attribute. | Interface | org.opengis.feature.type | GeoTools |
| GeometryType | The type of a GeometryAttribute. | Interface | org.opengis.feature.type | GeoTools |
| Name | A qualified Name (with respect to a namespace rather than just a simple prefix). | Interface | org.opengis.feature.type | GeoTools |
| Namespace | A set of 0 or more names, with no duplicates. | Interface | org.opengis.feature.type | GeoTools |
| Operation | An implementation of an operation that may be invoked on an Attribute. | Interface | org.opengis.feature.type | GeoTools |
| OperationType | The type of operations to be invoked on an attribute. | Interface | org.opengis.feature.type | GeoTools |
| PropertyDescriptor | Describes a Property, and how it relates to its containing entity, which is often a ComplexAttribute. | Interface | org.opengis.feature.type | GeoTools |
| PropertyType | The type of a Property. | Interface | org.opengis.feature.type | GeoTools |
| Schema | A collection of AttributeType. | Interface | org.opengis.feature.type | GeoTools |
| AttributeType | Interface | org.opengis.feature.type | GeoApi | |
| FeatureType | Interface | org.opengis.feature.type | GeoApi | |