File-based database

Location: Overlay Types > Ordnance Survey (GB) > OS MasterMap Topography Layer > File-based database

Reads one of the supported database formats directly from a file, e.g. Microsoft Access .mdb/.accdb, or SQLite .db/sqlite.

Look in

Shows the hierarchy of folders. Click the adjacent Up arrow to move one folder higher.

Main pane

Lists the folders and files in the selected location.

File name

List the types of files to dipsplay. This is useful for narrowing the displayed list to only the file type you are interested in. The Files of type drop-down list is as follows:

Cadcorp OS MasterMap Database (*.odb)
Microsoft Access 2000 (*.mdb)
Microsoft Access 2007 (*.accdb)
All known formats
All files (".")

Click Next.

The Ordnance Survey (GB) MasterMap - Configuration dialog is displayed:

OS MasterMap Feature Table

Choose the OS MasterMap Topography table for display.

Geometry Types

Points (incl. Text)

Displays Point Items, including Text.

Line Strings

Displays LineString Items.

Non-bounding only

Displays only 'non-bounding' LineString Items.

Polygons

Displays Polygon Items.

Themes

Choose the OS MasterMap Topographic Themes for display.

Archive View

Create a snapshot view

If active, check the tickbox to create a "snapshot" view of the database, i.e. a historical query at some point in the history of Change-only updates.

Date

The date range for the archive.

Click Finish.

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