i want to make it so that i will have to fill in all
the attributes in .so i put not null for all the
attributes. Is this correct ?? when  for example do
not fill in user_name , all the other values is
accepted and stored in the database....please advise

create table user_details
(user_id varchar(10) not null primary key,
user_name varchar(50) not null,
user_email varchar (30) not null,
user_contact int not null,
user_username varchar (20) not null,
user_password varchar (20) not null
);

thank you...

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