From the course: Cisco DevNet Associate (200-901) Cert Prep 1: Software Development and Design
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XML concepts and usage
From the course: Cisco DevNet Associate (200-901) Cert Prep 1: Software Development and Design
XML concepts and usage
- [Instructor] Understanding XML concepts and usage. XML stands for extensible markup language. A markup language in computer processing is a system for annotating a document that uses a different syntax to describe the text. In XML, we use symmetrical pointing brackets as the annotation. In other words, in an XML document, the words in the bracket pairs are used to describe the text, while the tags are the data themselves. Let us look at an example. We can use the tags of food, recipe, and title to describe a recipe for making a sandwich. These tags are only meant to enhance the meaning and understanding of the text. Notice the tags are symmetrical. We have an opening tag and a closing tag with the same name, except the closing tag is preceded with a forward slash. Each of the symmetrical tags form a data element. In this example, we can also see the data is presented in a hierarchy format, starting with food, recipe, and…
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