Most programmers may already know the main different between CHAR and VARCHAR - The first one supports fixed-length data and the second one supports variable-lengths of data. Some people may think, since VARCHAR can do what CHAR does, then why we still need CHAR in our database design. I even have heard one of the very experienced Oracle database administrator say "Nowadays … [Read more...]
PHP: How to Protect Password in Database – Password Hashing
If you are a programmer, you may have developed applications that store users or your customers' information in database. How to store users' or customers' sensitive data (especially password) might be an issues for most programmer. How do you ensure and convience that your users or customers' password are actually secured? … [Read more...]