Need to validate the syntax of the url by using the functions of DBMS

All,

I need to validate the syntax of the url in a table. Please suggest is there any function of DBMS is available to do
action in PL/SQL, stored procedure. Help, please.

use regular expressions... check by using the following in regexp_like...

^ http\: / / [a-zA-Z0 - 9-------.] +. [a-zA-Z] {2,3} (/ \S*)?$)

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