Wirral Part 4 - National Museums Liverpool

Visual Basic Application
This handles all user interaction. It feeds user mouse movements, clicks etc. into the
MapInfo component via the interface written in MapBasic. It displays and records any
information entered on user input forms, created in Visual Basic, by reading and
writing the data to the Access database.
MapInfo Component
This provides the GIS side of the system, handling the display and carrying out the
manipulation of the underlying MapInfo maps and air photos.
MapBasic Interface
This is an interface written in MapInfo’s MapBasic that sits between and handles
interaction between the Visual Basic Application and the MapInfo Component. The
interface is also responsible for the digitizing of polygons and reading/writing this
information to the underlying MapInfo table in which they are stored.
Access Database
This stores the information about each of the digitized polygons that has been entered
by the user. The database also stores additional information on the required time
periods, types, subtypes, street information and user defined characteristics.
The following diagram shows the relationships between the tables in the Access
database:
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