Distinct molecules called agglutinogens (a type of antigen) are attached to the surface of red blood cells. There are two different types of agglutinogens, type A and type B. Each type has different properties.
MDB: Geodatabase. The geodatabase is a collection of geographic datasets of various types, with the most basic types being vector, raster, and tabular data. There are three types of geodatabases: file, personal, and ArcSDE. Geodatabases are the native data format for ESRI's ArcGIS.
Feature datasets in ArcGIS for Desktop. In the Catalog tree, feature datasets are represented with the following icon: When the feature dataset is expanded in the Catalog tree, you can see all the feature classes and other data objects that are in it. The name of a feature dataset in a geodatabase in IBM Informix contains the database name, followed by a colon (:), the dataset owner's name, and the name of the feature dataset itself.