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.
Page 11 of 11 Paper # 214 document for the resultant XML. With the help of PL/SQL codes we saw how records from a table can be converted to XML documents and how data embedded in an XML document can be written back to the table.These basic models can be extended to work with complex tables with complex business rules.ince XML is truly extensible, rather than a fixed set of elements like HTML, use of XML will eventually eliminate the need for browser developers and middle-ware tools to add special HTML tags (extensions). Listing 1 is an example of a simple XML document.