Strange delete...

Hello everybody!
I don't know what does this DELETE instruction:
DELETE /*+ BYPASS_UJVC */FROM (SELECT a.ROWID
FROM TABLE1 a,
TABLE2 b,
TABLE3 c,
TABLE4 d
WHERE a.id_sipm = b.id_sipm
AND b.id_sitr_pefe = c.id_sitr_pefe
AND c.id_dece_400 = d.id_dece_400
AND d.cod_dece_tica = 'MI') e;
Delete rows ONLY from TABLE1?
Delete rows from all tables joined?
Wich is the use of this DELETE?
And the /*+ BYPASS_UJVC */ hint?
Thanks for advanced.
Edited by: pacoKAS on 29-oct-2010 11:35

Sorry!!!
This is not the forum for this question!!!
I'm sorry again...

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    Change the value of the first row by 80 (ok)
    errors appears (by validator) (ok)
    Enter the value 77 in the InputText (ok)
    the id is changed but the value NO (*KO*)
    I do not understand the behavior
    Edited by: josefuente on 27-oct-2010 16:03

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