Help???
This must be a common thing to do but have not seen an example to
reference.
Must create a web input form dialogue box ( dbi/oracle/CGI module )
which allows user to input a string. String will be placed in
table if it is unique. String must be unique since it
is to be placed into a primary key field. How would one force
or promt the user to enter a unique string by either:
1.) appending some characters onto the string before being inserted
into database ( in case there is an identicle string in the table
already - meaning the database requires a search for that string
on the table in question before each insert )
OR
2.) gracefully, have the form respond to user that the string is already in
the database (meaning a search must happen once the string is entered
form
the form before attempting to place it into database. User must then
pick a new
string if search comes back positive. Or user could then use the string
already found in the database as his form input ( upon being alerted
after selecting the already present string). At that point the string
is
not inserted into database but used nonetheless as part of the users
choice" to then do other operations with it.
OR
3.) any idea is welcome similar to or combining ideas from 1) & 2).
