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What is Xpath?- A language for addressing specific parts of an XML document is known as an XPath.
- XPath is just like the Document Object Model (DOM), it models an XML document as a tree of nodes.
- A mechanism for navigating through and selecting nodes from the XML document is an XPath expression.
- This expression is, in a way, analogous to an SQL query which is used to select records from a database.
- Different types of nodes are included like element nodes, attribute nodes and text nodes.
- A string-value can be computed for each type of node is defined by the Xpath.
- A set of library standard functions for working with strings, numbers and boolean expressions are defined.
1. child::* - It selects all children of the root node.
2. .//name - It selects all elements having the name "name", descendants of the current node.
3. /catalog/cd[price>20.50] – It selects all the cd elements that have a price element with a value larger than 20.50.
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