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.
What is a file geodatabase? A file geodatabase is a collection of files in a folder on disk that can store, query, and manage both spatial and nonspatial data. You create a file geodatabase in ArcGIS. File geodatabases are made up of seven system tables plus user data. 1  User data can be stored in the following types of datasets: 2  Feature class. 3  Feature dataset. 4  Mosaic dataset. 5  Raster catalog. 6  Raster dataset. 7  Schematic dataset. 8  Table (nonspatial) 9  Toolboxes.