The page opened at this step (figure 65-3) is intended for setting correspondence between table fields of MID file being created and fields of GDB tables linked with map feature types. If no GDB table was selected at the previous step, the step of setting links is omitted.
Figure 65-3. Export to MIF file, page “Setting links of components”
All GDB tables selected at the previous step are shown in the pane List of tables.
In the pane List of fields there is a list of all fields of selected table. Names of these fields are given in the column “Name in table”, types of field values – in the column “Type”.
Checkboxes to the left of the list of fields show which table fields should be exported. Checking and clearing these boxes is performed using context menu commands Export / Do not Export or just by clicks of the left mouse button.
To specify values of fields “Name in file”, “Width” and “Decimal point” it is necessary to select the corresponding line in the list of fields and perform the context menu command Change. A dialog box “Setting export of field” shown at figure 65-4 will be opened.
Figure 65-4. Dialog box “Setting export of field”
One should enter a name in the pane MIF file under which this field will be described in the structure of attributive data. Field name in MIF file should consist of letters and digits, it should begin with a letter and have not more than 31 characters.
In the pane Size field width is specified (the number of positions in character representation of value), and for real numbers – also the position of decimal point, that is, the number of digits in fractional part of the number. For fields of types “Date” and “Boolean” length is not specified, it is determined according to format of representation of these fields.
Lists of indexed and unique fields of attributive data stored in MIF file header are formed on the basis of values of attributes “Indexed” and “Unique” for exported fields of linked table.
For every GDB table selected at the previous settings step at least one field for export should be chosen.
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