In the version MisterEstate 1.1 I did autofill date field ID in the format "year/month/day/hour/minute/seconds" - ID receive about such 081201103315, long and awkward, but the number is unique! I think I would support many webmasters and users, if implemented several patterns for this function, for example:
1. avtoincrease ID when creating new records in the database (001,002,003, ..) - optionally, specify the number of digits in ID
2. date, as I said earlier - you can offer a few templates to choose from
3. referenced to the object properties, such as street + house number + something else
4. You can, (for maniacs :-*) ) to generate a hash of the entered data (b2gG9SDeaZXLw)
5. to think, who are the ideas?