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ancestors
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The node its parents.
The firstName ancestors are employee and employees.
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atomic values
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Does not have childeren or parents and does not contain any other value.
Example: the values 1000 or Joe are atomic values.
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attribute
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Values assigned to a node.
Example: id="1000" is an attribute node.
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@
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child
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firstName, lastName and securityLevel are children of employee
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descendants
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The node its children.
The descendants of employees are employee, firstName, lastName and securityLevel.
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element node
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<firstName>Joe</firstName>
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expression
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Expressions are put inside the brackets.
Example: employee[lastName='Smith']
This syntax is to find all employee nodes, whose lastName element has
the value Smith.
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[]
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node
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A node can be an element, attribute, namespace, text, comment, processing instruction or
document node.
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parent
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employee is the parent of firstName, lastName and securityLevel
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..
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self
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The current node in the context.
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.
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siblings
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nodes that have the same parent.
firstName, lastName and securityLevel are all siblings
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Document node or root node.
The node in context.
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Example: /employees
Selects the employees element, starting at the root of the document.
Example: employee/firstName
Select all firstName elements that are children of employee.
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/
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All elements where they are in the document.
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Example: //firstName
Select all firstName elements no matter where they are in the document.
Example: employees//firstName
Select all fistName elements that are descendant of the employees
element, no matter where they exist under the employees element.
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//
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