The linked table settings is a powerful option that allows users to link tables and view data and objects from the other tables.  The linked table settings section on the main BosqMap settings dialog is as shown:

Linked tables

-gives a drop-down list of all linked tables currently implemented

Expression

-is the BosqMap expression and is shown for evaluation purposes only.

It is only possible to add a link to, or change the link settings of, an open table and the administrator is double-prompted before removing any links.

To add or edit a link between tables – click ‘Add link’ or ’Edit link’ and the following dialog will display:

Table linked to ‘xxxx’

 - this is the table which is linked to the base table (in this case Major_Cities

Location relative to xxxx.tab - 

when checked the linked table’s path is relative to the base table

Display expression

– this is the title that will be given to each selected object in the linked table, see multi-display expression dialog box for instructions for on how to use this dialog box.  However the following is an example:

The above expression will produce the following titles for linked objects (accessed through the BosqMap data display dialog):

Column in ‘xxxx’ – this is the column in the base table which is to be linked to the linked table.

Linked to ‘xxxx’ column – this is the column in the linked table which is to be linked to the base table.

In this example BosqMap selects all objects from the Table Major_Cities where the country is the same as the object selected in the base table (there are 79 major cities in Spain).