Does the order of elements matter in XML?
Until today I would most likely answer the question Does XML care about the order of elements? with No, unless you use a poorly written xml parser. The sequence element specifies that the child elements must appear in a sequence. Each child element can occur from 0 to any number of times.
Does XML maintain order?
Yes, that’s correct. The order of elements is always significant regardless of what they are. You mention in a comment below that the significance of the order of elements is explicitly stated in the XML Specification.
How do you reference a schema in XML?
- Reference the XSD schema in the XML document using XML schema instance attributes such as either xsi:schemaLocation or xsi:noNamespaceSchemaLocation.
- Add the XSD schema file to a schema cache and then connect that cache to the DOM document or SAX reader, prior to loading or parsing the XML document.
Which schema tag is used to specify the order in which tags should appear?
Order indicators are used to define the order of the elements.
Which schema tag allows to specify elements in any order?
all> Element Allows the elements in the group to appear (or not appear) in any order in the containing element.
What are XML entities used for?
XML entities are a way of representing an item of data within an XML document, instead of using the data itself. Various entities are built in to the specification of the XML language. For example, the entities < and > represent the characters < and > .
Which element is used to reference an XML schema in an XML document?
A XML Schema can be referenced from an XML document by defining the schemaLocation and noNamespaceSchemaLocation attributes. The ‘schemaLocation’ attribute is used to reference XML Schema(s) that are defined in a target-namespace.
Which schema tag allows to specify elements in any order in XML?
xs:all specifies that the child elements can appear in any order.
Which schema allows to specify elements in any order?
XSD – how to allow elements in any order any number of times?
- Allow child element specified to appear any number of times (0 to unbounded)
- Allow child elements to be in any order.
What is the purpose of schema in XML?
The purpose of a schema is to define and describe a class of XML documents by using these constructs to constrain and document the meaning, usage and relationships of their constituent parts: datatypes, elements and their content, attributes and their values, entities and their contents and notations.
What does it mean to include schema in XML?
Including or Importing XML Schemas. An XML schema may contain , , and elements. These schema elements refer to other XML schemas that can be used to supplement the structure of the schema that includes or imports them.
Do you know the Order of XML elements?
TL;DR. If your XSD is using the xs:sequence indicator, then the order of the elements in that complex type matters, and they should be included in the order listed inside the tag. XML Specification. Generally speaking, the order in which child elements appear inside their parent element container in XML shouldn’t matter.
What are the strengths of an XML Schema?
Another great strength about XML Schemas is that they are written in XML. XML Schemas are extensible, because they are written in XML. When sending data from a sender to a receiver, it is essential that both parts have the same “expectations” about the content.
Are there any other XML Schema standards besides DTD?
XML Data Reduced (XDR) was an early attempt but Microsoft to provide a more comprehensive standard than DTD. This standard has been phased out in the Microsoft products in favour of XSD. There are also a number of other schema standards such as Schematron and RELAX NG.
