If you already have an .mxd file for the model:

1. Click Open.
2. Browse to the .mxd file in the Open dialog and then click Open.
3. In ArcMAP, click Add Data.
4. In the Add Data dialog that opens, browse to your model's .sqlite file.
5. Double click and select the feature datasets, then click Add to add them to the map.
6. To start adding elements to the model, click Editor and select the Start Editing command from the menu.
7. Click the Sketch Tool in the Editor toolbar, move the mouse cursor to the location of the new element in the drawing pane, and click. The new element will open.
8. Using ArcMap's attribute tables, you can now enter data for the newly created element.
9. When you are finished laying out elements and editing their associated data, click Editor and select Stop Editing from the menu. A dialog will open with the message "Do you want to save your edits?". Click Yes to commit the edits to the database, No to discard all of the edits performed during the current editing session, and Cancel to continue editing.