Each XML document contains one or more elements, the scope of which are either delimited by start and end tags, or for empty elements, by an empty-element tag.An empty element (element with no content) has following syntax −Following is an example of an XML document using various XML element −Following rules are required to be followed for XML elements −Names are case sensitive. HTML attributes are used to describe the characteristic of an HTML element in detail. Using a SAX parser you will get an element call back containing the element name and the list of attributes.

1.1 Elements, Attributes and Entities. First I landed on this article, If you consider the information in question to be part of the

Attributes are used to add a unique label to an element, place the label in a category, add a Boolean flag, or otherwise associate it with some string of data. (20 answers) If you're building XML as a string, then you're open to this an tons of other problems.The standard way to do lists in attributes is attribute="1 2 3 7 20", which is supported by XML Schema.i.e. WCF).

the structure may be extensible, use elements. An XML attribute is always a name-value pair. These IDs can be used to identify XML elements in much the same way as the ID attribute in HTML. Metadata - for example an ID associated with a piece of content but only of value for internal use rather than for display to the end user - should be in an attribute.Here's another thing to keep in mind when deciding on an XML format: If I recall correctly, the values of "id" attributes must not be all numeric, they must meet the rules for names in XML. These people seemed to follow the old adage "XML is like violence. whitespace separated ? Attribute values must always be quoted. digested by a machine, use attributes.Use an element if you need its value to be modified by another Hence, we have two categories of You can also observe that we have declared this attribute at the beginning of XML.This is a more constrained type. Data can be stored in child elements or in attributes.Take a look at these examples:In the first example sex is an attribute. Contrast it with, say:You can't put a CDATA in an attribute. Now, can I extract those using (say) XPath and other standard toolings ?I would be using XML with PHP and MySQL. Use child elements if the information feels like data.The following three XML documents contain exactly the same information:An expanded date element is used in the third: (THIS IS MY FAVORITE):If you use attributes as containers for data, you end up with documents that are difficult to read and maintain. A markup language specified using XML looks a lot like HTML; a document consists of a single element, which contains sub-elements, which can have further sub-elements inside them.Elements are indicated by tags in the text. Yea, i went to bed on this last night and, as it happens so often, … OK, just expand by adding new author elements (optionally remove the original @author). Use child elements if the information feels like data. XML Element Name must be follow this things.

Every character has a name and age.You could argue that a book could have multiple authors. In the last, sex is a child element. For a person's gender, the element can be written like this: i.e: an ID of an element, i would put it as an attribute of the element.But it's true that while parsing a document attributes could cause more headaches than elements.All depends on you, and how you design your Schema. that are store information data. These ID references can be used to access XML elements in much the same way as the NAME or out of which, it must assign one value. :If you transform this into a map, you'll lose two things: the multiple values associated with The significance of this becomes a lot clearer if you look at DOM code that's used to update information in a format like this. W3Schools is optimized for learning, testing, and training. XML elements are represented by a tags. I didn't know that.

It is not a part of the note itself.Usage of attributes or elements is usually decided by the data you are trying to model.There is no rule as such that says something should be an attribute or a element.Its not necessary to AVOID attributes at all costs..Sometimes they are easier to model, than elements.

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