database - How should I store a GUID in Oracle?

Question

I am coming from the SQL server world where we had uniqueidentifier. Is there an equivalent in oracle? This column will be frequently queried so performance is the key.

I am generating the GUID in .Net and will be passing it to Oracle. For a couple reasons it cannot be generated by oracle so I cannot use sequence.

Answer 1

CREATE table test (testguid RAW(16) default SYS_GUID() ) 

This blog studied the relative performance.