DX has a powerful and flexible data model capable of representing many
sorts of data. Whilst you do not need to understand the data model in
detail, you will be able to use DX more effectively if you have a
rudimentary understanding of it. Section
gives a very
brief summary of the data model. If you do not like reading manuals
it might just about give you enough information to get by.
Section
presents a slightly longer, but still quite short,
introduction to the data model. I recommend that you read it if you are
planning to make a significant amount of use of DX.
The DX Cookbook