Loading XML(XSD) file into database by validating the format in file

Question

Hi,
I have a file whose format is predefined as listed below
<?xml version="1.0" encoding="utf-8" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
     <xs:element name="VVV">
          <xs:complexType>
               <xs:sequence>
                    <xs:element name="VVVHeader">
                    <xs:complexType>
                    <xs:sequence>
                    <xs:element name="UniqueIdentifier" type="xs:SEQ0001"/>
                    <xs:element name="VVVFileType" type="xs:123"/>
                    <xs:element name="FileCreatedDatetime" type="xs:23-MAY-2006"/>
                    <xs:element name="ScanDatetime" type="xs:23-MAY-2006"/>
                    <xs:element name="BatchID" type="xs:456"/>
                    <xs:element name="BatchSequence" type="xs:1001"/>
                    <xs:element name="DataEntryDatetime" type="xs:23-MAY-2006"/>
                    </xs:sequence>
                    </xs:complexType>
                    </xs:element>
                    <xs:element name="VVVDetail">
                    <xs:complexType>
                    <xs:sequence>
                    <xs:element name="RRRLocalOffice" type="xs:Mumbai"/>
                    <xs:element name="Duplicate" type="xs:No"/>
                    <xs:element name="ReRegMarker" type="xs:boolean"/>
                    <xs:element name="RegistrationMark" type="xs:Vishnu"/>
                    <xs:element name="RegMarkCheckDigit" type="xs:12S"/>
                    <xs:element name="TaxClassCode" type="xs:67"/>
                    <xs:element name="ExternalMakeCode" type="xs:Maruti"/>
                    <xs:element name="ExternalModelCode" type="xs:800LX"/>
                    <xs:element name="RRRMakeCode" type="xs:Mar"/>
                    <xs:element name="RRRModelCode" type="xs:800LV"/>
                    <xs:element name="RRRVehicleBodyCode" type="xs:98"/>
                    <xs:element name="RRRColourCode" type="xs:red"/>
                    <xs:element name="RegistrationDate" type="xs:23-MAY-2006"/>
                    <xs:element name="ChassisNumber" type="xs:num123"/>
                    <xs:element name="HC" type="xs:1.22"/>
                    <xs:element name="UnWeight" type="xs:90"/>
                    <xs:element name="NoSeats" type="xs:four"/>
                    <xs:element name="NOx" type="xs:2.22"/>
                    <xs:element name="RevenueWeight" type="xs:34"/>
                    <xs:element name="CO2" type="xs:55"/>
                    <xs:element name="Particulates" type="xs:long"/>
                    <xs:element name="CO" type="xs:3.33"/>
                    <xs:element name="HCNOx" type="xs:4.44"/>
                    <xs:element name="TrailerWeight" type="xs:66"/>
                    <xs:element name="StationaryLevel" type="xs:77"/>
                    <xs:element name="EngineSpeed" type="xs:88"/>
                    <xs:element name="DriveBynature" type="xs:99"/>
                    <xs:element name="SMMTFleetCode" type="xs:yel"/>
                    <xs:element name="Purchasercode" type="xs:4004"/>
                    <xs:element name="IndustryofUse" type="xs:office"/>
                    <xs:element name="OriginalDealerCode" type="xs:tr56"/>
                    <xs:element name="SellingDealerCode" type="xs:se23"/>
                    <xs:element name="bill110" type="xs:srira"/>
                    <xs:element name="bill111" type="xs:mula"/>
                    <xs:element name="SalesType" type="xs:krish"/>
                    </xs:sequence>
                    </xs:complexType>
                    </xs:element>
               </xs:sequence>
          </xs:complexType>
     </xs:element>
</xs:schema>
I would like to update this into a a table by validating the format of the XSD file.
I will be having several similar files.
Steps I will be doing on this are
1 > Pick up file from a directory one at a time
2 > Validate the format of XSD file
3 > If valid load into a table
How can I achieve above steps using PL/SQL
Pls mail me ur suggestions on very urgent basis
Thanks in advance
Vishnu

Answer 1

Really this should be in the XML forum, but anyway....
Just a small question... It looks as though you are using an XML schema (XSD) to store your table information along with it's data, am I correct? Seems very bizarre thing to do.
If you are using Oracle 10g you can drop your file into the Oracle WebDAV area (XDB) and from there you can access the XML as an XMLTYPE using something like...
SELECT rv.res.extract('/Resource/Contents/*')
FROM   resource_view rv
WHERE  lower(rv.any_path) = lower(lc_filename)Once you have it in the XMLTYPE variable from that query, and because your schema doesn't really define the datatypes etc. it's gonna be up to you to parse the XML using something like the DBMS_XMLDOM package and process that into create table statements or something.
Certainly looks like you've got yourself a nice task to do there. Glad I'm not doing it.
;)