I created a table in postgre using pgadmin4 but when trying to add data via the “add row” option in pgadmin it wont allow. The “add row” option is in disable state.
However looking through various threads and making some changes i.e. making column as “primary” in the table I can see the lock symbol goes away…

Checking the postgre docs i dont see it enforcing the “must-have” primary_key but suggests it as a good practise.
However i dont see pgadmin reflect this philosopy.

Am i missing out on something ?

Tried going through topics in stackoverflow and postgre docs but doesnt give the clarity i need