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SQLXML 의 세부 기능 소개 정 홍주 WebTime Feelanet

SQLXML 의 세부 기능 소개 정 홍주 WebTime Feelanet. 목차. Updategram Differgram Bulk Load Using Mapping Schemas URL 을 통한 HTTP Access Optimizing SQLXML Performance. INSERT UPDATE DELETE. XML delivery data. Updategram. XML Data 를 SQL Server 로 갱신 Insert,Delete,Update 문 자동 생성. Supplier.

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SQLXML 의 세부 기능 소개 정 홍주 WebTime Feelanet

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  1. SQLXML의 세부 기능 소개 정 홍주WebTimeFeelanet

  2. 목차 • Updategram • Differgram • Bulk Load • Using Mapping Schemas • URL을 통한 HTTP Access • Optimizing SQLXML Performance

  3. INSERT UPDATE DELETE XML delivery data Updategram • XML Data를 SQL Server로 갱신 • Insert,Delete,Update문 자동 생성 Supplier Shipping Co.

  4. Updategram 구조 • xml-updategram 네임스페이스 • <sync> element • “before” & “after”데이터 image <root xmlns:updg="urn:schemas-microsoft-com:xml-updategram"> <updg:sync [mapping-schema=mapping schema]> <updg:before> XML Fragment </updg:before> <updg:after> XML Fragment </updg:after> </updg:sync> </root>

  5. Mapping Updategram • Default Mapping • XML element,attribute 는 동일한 이름을 가진 데이터베이스의 컬럼으로 Mapping • attribute-centric, element-centric, or mixed • Explicit Mapping • <sync> element 의 mapping-schema attribute 에 지정한 부분으로 적용(XSD)

  6. Inserting Data • Row Insert • after부분에 처리 • IDENTITY Values, GUID <InsertProduct xmlns:updg="urn:schemas-microsoft-com:xml-updategram"> <updg:sync> <updg:before /> <updg:after> <Products ProductID="101"/> </updg:after> </updg:sync> </InsertProduct>

  7. Deleting Data • before부분에 처리 • 각 before child element는 유일하게 single record로 구분되어야 함 <DeleteProduct xmlns:updg="urn:schemas-microsoft-com:xml-updategram"> <updg:sync> <updg:before> <Products ProductID="101"/> </updg:before> <updg:after> </updg:after> </updg:sync> </DeleteProduct>

  8. Updating Data • “before”와“after”부분에 처리 • 여러 row는 id로 match <UpdateProduct xmlns:updg="urn:schemas-microsoft-com:xml-updategram"> <updg:sync > <updg:before> <Products ProductID="101"/> </updg:before> <updg:after> <Products UnitPrice="$752.99"/> </updg:after> </updg:sync> </UpdateProduct>

  9. Using Parameters • <updg:header>에 parameter 지정 • $를 사용 parameter 처리 <UpdateProduct xmlns:updg="urn:schemas-microsoft-com:xml-updategram"> <updg:header> <updg:param name="ProductID"/> <updg:param name="NewCategory"/> </updg:header> <updg:sync > <updg:before><products CategoryID="$NewCategory"/> <Products ProductID="$ProductID"/> </updg:before> <updg:after /> </updg:sync> </UpdateProduct>

  10. Differgram • Differgram 도 template , xml file • URL 쿼리,ADO,.NET Managed Class에서 사용 <diffgr:diffgram xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" xmlns:diffgr="urn:schemas-microsoft-com:xml-diffgram-v1"> <DataInstance> <Customer diffgr:id="Customer1" msdata:rowOrder="0" diffgr:hasChanges="inserted" CustomerID="ALFKI"> <CompanyName>C3Company</CompanyName> <ContactName>C3Contact</ContactName> <Order diffgr:id="Order1" msdata:rowOrder="0" diffgr:hasChanges="inserted" CustomerID="ALFKI" OrderID="1"/> </Customer> </DataInstance>

  11. Extranet Catalog Bulk Load facility Bulk Load • XML Data를 SQL Server로 Bulk Load • COM Component • 대량의 데이터처리, 빠른 성능 Supplier Retailer

  12. Using SQLXMLBulkLoad • SQLXMLBulkLoad Object를 생성 • Execute Method를 이용 Data와 매핑을 로드 • Mapping schema, XML source parameter Set objBL=CreateOhect("SQLXMLBulkLoad.SQLXMLBulkLoad") objBL.Execute "c:\productschema.xml", "c:\products.xml"

  13. Purchase order schema Purchase order Catalog Catalog schema Using Mapping Schemas Supplier Retailer

  14. Using Mapping Schemas • XML 문서표현에 대한 동의 • Relation Data와 XML간의 mapping정보 • Schema의 일종 생성 • XML-Data Reduced (XDR) • XML Schema(XSD)

  15. Mapping • XML-SQL, xmlns:xsd namespace • Default mapping 적용 • sql:relation 주석을 사용 table 또는 view 의 alias를 생성 • sql:field 주석을 사용 column의 alias를 생성

  16. 예) Default Mapping <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema“ xmlns:msdata="urn:schemas-microsoft-com:mapping-schema“> <xsd:element name=“Customers”> <xsd:complexType> <xsd:attribute name=“CustID”/> </xsd:complexType> </xsd:element > </xsd:schema> 관계형 데이터:Customers XML View CustID ------ A NULL B <Customers CustID=“A”/> <Customers/> <Customers CustID=“B”/>

  17. 예) Explicit Mapping <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema“ xmlns:msdata="urn:schemas-microsoft-com:mapping-schema“> <xsd:element name=“Customers”msdata:relation=“UserObject"> <xsd:complexType> <xsd:attribute name=“ID”msdata:field=“SECOrgID"/> </xsd:complexType> </xsd:element > </xsd:schema> 관계형 데이터: UserObject XML View SECOrgID ------ A NULL B <Customers ID=“A”/> <Customers/> <Customers ID=“B”/>

  18. 예) Join Mapping <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:mapping-schema"> <xsd:element name="Customer"msdata:relation="Customers"> <xsd:complexType> <xsd:sequence> <xsd:element name="Order"msdata:relation="Orders"> <xsd:annotation><xsd:appinfo> <msdata:relationship parent="Customers" parent-key="CustomerID" child="Orders" child-key="CustomerID" /> </xsd:appinfo></xsd:annotation> <xsd:complexType> <xsd:attribute name="OrderDate" type="xsd:dateTime"/> </xsd:complexType> </xsd:element> </xsd:sequence> <xsd:attribute name="CustomerID" /> </xsd:complexType> </xsd:element> </xsd:schema>

  19. Filtering Data • sql:limit-field 와sql:limit-value 사용 <xsd:annotation> <xsd:appinfo> <sql:relationship name="CustAddr“ parent="Customer" parent-key="CustomerID" child="Addresses" child-key="CustomerID" /> </xsd:appinfo> </xsd:annotation> <xsd:sequence> <xsd:element name="BillTo" type="xsd:string" sql:relation="Addresses" sql:field="StreetAddress" sql:limit-field="AddressType" sql:limit-value="billing" sql:relationship="CustAddr" >

  20. Using Constants • sql:is-constant 사용 • 1 이면 mapping되지 않음 <xsd:element name="CustomerOrders" sql:is-constant="1" > <xsd:complexType> <xsd:sequence> <xsd:element name="Order" sql:relation="Orders" sql:relationship="CustOrders" maxOccurs="unbounded" > <xsd:complexType> <xsd:attribute name="OrderID"

  21. Schema를 이용 데이터 검색 • XPath 를 이용하여 select • <sql:xpath-query> element • Schema Virtual Name 게시 • schema/Schema2.xml/Customers[@CustomerID="ALFKI"] • SqlXmlCommand 클래스를 이용 • <sql:xpath-query> element • Template 인라인 Mapping Schema

  22. Browser Supplier Extranet Intranetsite Catalog Web site Application Retailer Shipping Co. Browser URL을 통한 HTTP Access • HTTP를 통한 SQL Server Data게시 • URL 쿼리, XML View, POST, Template

  23. Vir-Directory Architecture Clients Internet Information Services SQL Server 2000 http://webserver/data Web browser An XML document Virtual directory Business partners Virtual name HTTP-aware applications …FOR XML… OLE DB Sqlisapi.dll Sqlxmlx.dll

  24. Virtual Directory 생성 • 이름과 실제 경로 지정 • 데이터베이스 선택 • 보안 구현 • HTTP option 선택 • virtual name 생성template 파일, mapping schema, database object 또는 soap • 추가적인 parameter 지정

  25. HTTP Access 테스트 • URL 쿼리를 이용 할 수 있도록 선택 • root element를 지정 http://webserver/data? sql=SELECT productname, unitprice FROM products FOR XML AUTO&root=catalog

  26. XML Template 파일 • 하나이상의 SQL statements 또는 XPath 쿼리로 이루어진 valid XML 문서 • 서버사이드 • Parameter 허용 <?xml version="1.0"?> <catalog xmlns:sql='urn:schemas-microsoft-com:xml-sql'> <sql:query> SELECT productid, productname, unitprice FROM products product FOR XML AUTO </sql:query> </catalog>

  27. Template File 게시 • template file이 있는 폴더에 virtual name 지정 http://webserver/data/templates/catalog.xml Object Physical path Name webserver Web server data Virtual directory C:\SQLSite templates Virtual name C:\Templates catalog.xml Template file C:\Templates\catalog.xml

  28. Webserver C:\SQLSite (Virtual root data) C:\Schemas (Virtual name schemas) inv.xml Schema Virtual Name 게시 • Schema를 담고있는 폴더를 virtual name으로 구현 • 클라이언트에서는 URL을 이용하여 schema를 액세스 http://webserver/query/schemas/inv.xml/Item?root=Invoice

  29. dbobject Virtual Name 게시 • BLOB 데이터를 처리하기 위해 dbobject virtual name 구현(예 image) • AUTO 모드에서 처리되는 binary object 를 처리 • path 는 미지정됨 • 단지 각 virtual directory에 하나만 지정 • XPath 쿼리 허용

  30. URL을 통한 dbobject • Xpath 적용 • 스타일 시트의 IMAGE 태그의 src로 dbobject 사용 dbobject/categories[@categoryid='1']/@picture <IMG> <xsl:attribute name='SRC'> http://webserver/data/ <xsl:value-of select='@picture'/> </xsl:attribute> </IMG>

  31. SOAP Virtual Name 게시 • SP,Template 로 soap virtual name적용 http://IISServer/nwind/SoapVirtualName?wsdl

  32. SQLXML 성능 최적화 • Caching • Template Caching • XSLT Stylesheet Caching • Schema Caching • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSSQLServr\Client\SQLXML3 • SQLXMLOLEDB • con.open "Provider=SQLXMLOLEDB;data provider=sqloledb;

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