Today I followed this way:
link rather than embed the images, so that the odb file can remain of
small size.
1. in edit view add a
text box in your form and
2. convert it (replace with) to a
image control
3. in normal view double click on the new box and select the image, which will not embedded, but linked.
with mysql
If you use a mysql database you can set the field as varchar (at least 150 char) and insert the location, such as http://localhost/your-path/yourfile.jpg.
Then you can add this field as data in the text box (as above).