A typical diffusion constant for a medium-sized molecule in water is about . If we want the smell to travel a quarter mile, or a little less than , we get a speed of. This speed is fantastically slow, and says that it would take ten million years for blood to diffuse out to a shark a quarter mile away.
XML Parser. A parser is a piece of program that takes a physical representation of some data and converts it into an in-memory form for the program as a whole to use. Parsers are used everywhere in software. An XML Parser is a parser that is designed to read XML and create a way for programs to use XML. There are different types, and each has its advantages. Unless a program simply and blindly copies the whole XML file as a unit, every program must implement or call on an XML parser.
Today, I have provided an article showing you Query, Node and Exist methods with XML type variables in SQL Server 2012. To use an XML method, we create a XML type variable to return data from columns and variables of the XML data type using the Query and Node methods. Let's have a look at a practical example. The example is developed in SQL Server 2012 using the SQL Server Management Studio. Query Method. It is probably the simplest and most straightforward of the XML methods. The query method retrieves a subset of untyped XML from the target XML instance. Syntaxobj.query('XQuery'). Example. First, I declared the @xml variable as type XML. The query method is then used to specify an XQuery against the document.