You pretty much have it correct. If no data lends itself to being a natural key (i.e. nothing int the data is unique across rows) a surrogate key needs to be supplied.
If you created a id column using [int auto_increment primary key] then you have a surrogate key because, although the column uniqiuely identifies each row, it has no real world realtionship with the data.
Using unique 'business' data means you are using a natural key e.g. social security numbers in a payroll database
Hi, I am a newbie in developing a website. i have tried to connect using mysqli conncetion
Here is my simple code.
// db.php code
//$con = mysqli_connect("localhost","root","","bakery"); ...