Home > Article > Backend Development > Recommended courses on architecture creation
XML views of relational data can be created using the XDR (xml-Data simplified) schema. These views can then be queried using XPath queries. This is similar to using the CREATE VIEW statement to create a view and specify a SQL query against the view. An XML schema describes the structure of an XML document and the different constraints on the data in the document. When you specify an XPath query against that schema, the structure of the returned XML document is determined by the schema against which the XPath query was executed. In Microsoft® SQL Server™ 2000, use the simplified XML-Data (XDR) language to create schemas. XDR is a flexible language that overcomes some of the limitations of document type definitions (DTDs) used to describe the structure of documents. Unlike DTDs, XDR schemas describe document structure using the same syntax as XML documents. Additionally, in a DTD, all data content is character data. The XDR language schema enables you to specify the data type of an element or attribute. In
1. Create an XML view using an annotated XDR schema
Introduction: You can use the XDR (xml-Data simplified) schema to create XML views of relational data. These views can then be queried using XPath queries. This is similar to using the CREATE VIEW statement to create a view and specify a SQL query against the view.
2. Build your own PHP framework - build the basic structure
Introduction: Build your own PHP framework - build the basic structure First, let's talk about why we need to create our own framework? Why create your own framework? If you talk to people around you, everyone will tell you that reinventing the wheel is a bad thing and you're better off choosing an existing framework and forget about "creating your own framework". For the most part, they're correct, but I can think of a few benefits of creating your own framework: Learn more about the framework's underlying architecture Create one that satisfies
Introduction: This article describes how to use it in the document/view/framework architecture of MFC ADO and ADOX to create and open databases. Preparatory reading MFC technical article TN025: Document, View, and Frame Creation Microsoft Knowledge Base article Q183606 ActiveX Data Objects (ADO) Frequently Asked Questions Q169496 INFO: Using Acti
The above is the detailed content of Recommended courses on architecture creation. For more information, please follow other related articles on the PHP Chinese website!