XQuery vs XPath
- XQuery is a functional programming language that is used to query a group of XML data.
- It is able to manipulate and extract data from either XML documents or relational databases and MS Office documents that support an XML data source.
- It is a language that helps in creating syntax for new XML documents.
- XQuery represented in the form of a tree model with seven nodes, namely processing instructions, elements, document nodes, attributes, namespaces, text nodes, and comments.
- All values referred to as sequences.
- Even a single value considered as a sequence of length one.
- The sequence can consist of either nodes or atomic values like integers, strings, or Booleans.
It has the following features that used for the transformation of XML data:
- Side effect free.
- Logical/physical data independence.
- Strongly typed.
- High level.
- XPath is the XML Path Language that used for selecting nodes from an XML document using queries.
- It can also compute values like strings, numbers, or Boolean type from another XML document.
- The expression in case of XML known as XPath.
- Moreover, It represented a tree structure with the ability of XPath to navigate it by selecting different nodes.
- It created to define a common syntax and behavior model for XPointer and XSLT.
XPath has the following features:
- XPath defines the syntax for an XML document.
- It has the capability to navigate path expressions in XML documents.
- Moreover, It has its own library defining standard functions.
- It is a major component of XSLT.
Other differences between XQuery vs XPath:
- XPath is viewed as a regular expression whereas XQuery is like a C-programming language w.r.t. XML documents.
- XPath is a filter for an XML dataset and is the transformational component of XSLT. XQuery used to select several nodes from an XML document for the purpose of processing using different queries.
- XQuery uses XPath syntax for addressing different parts of an XML document. The joins performed using the FLWOR expression. This expression has five clauses, namely, WHERE, ORDER BY, FOR, LET, and RETURN.