Problems with unique links in database: www.doamin/ or domain/

Posted by Thomas on Stack Overflow See other posts from Stack Overflow or by Thomas
Published on 2010-05-22T11:09:42Z Indexed on 2010/05/22 11:10 UTC
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Filed under:

database

|

http

|

domain

|

address

|

www

In my website everybody can send some links to other nice websites. All links in my database must by unique, but some links are with 'www.' prefix, and some without. Some ends for '/', some not. For example:

|http://www.domain.com

|http://domain.com

|http://domain.com

|http://domain.com/

and other problems can be with https or http.

I know that I should change address before saving to database, but what standard I should use?

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