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.
Once the format of a layer definition has been defined in ArcPad Studio and/or using the ArcPad Data Manager for ArcGIS, it is possible to make changes or additions using ArcPad Studio. You can also use your favorite text or XML editor to make changes to a layer definition file associated with a shapefile.