At what stage of website development is a database modeled?

Question

Database design

The process of developing a website includes several stages, for example:

1. Collection of information
   
2. Creation of sitemap and layout
   
3. Page template design
   
4. Layout and development
   
5. Testing and launch
   
6. Support
   

On which of them is it more logical to start modeling a database, or is it worth including a separate item?

Answer 1

I have no idea how you can work with data if there is no idea how they are stored and retrieved.
do you know this way? then the item has no piano at all.
not known? draw conclusions.

Answer 2

Development without a database is certainly possible, but if the database is ready before development starts, there will be much less troubles.