Search the book for 'image' and you will find a lot of references.
Here is an quote from early in the book (
http://web2py.com/book/default/chapter/01?search=image):
"Here are some examples of web2py statements that illustrate its power and
simplicity. The following code:
1.
db.define_table('person', Field
<http://web2py.com/book/default/docstring/Field>('name'), Field
<http://web2py.com/book/default/docstring/Field>('image', 'upload'))
creates a database table called "person" with two fields: "name", a string;
and "image", something that needs to be uploaded (the actual image). If the
table already exists but does not match this definition, it is altered
appropriately."
Regards
Johann
--
Because experiencing your loyal love is better than life itself,
my lips will praise you. (Psalm 63:3)