- [Instructor] There are a couple of different ways…to associate sets of rules…with your XML documents to help ensure their quality,…and make sure that they are as error-free as possible.…One of those ways is through…what are called document type definitions,…and that's what we're going to look at in this chapter.…Document type definitions provide a way…to constrain the content of XML documents…so that you can specify what kinds of tags…and attributes and other types of content…are and are not allowed.…
You can specify what kind of content can appear,…where it can appear,…and what kinds of content tags themselves can have.…DTDs can be included directly in an XML file…or be declared as an external DTD…and then associated with more than one XML document.…DTDs are pretty simple to write,…but the trade off is that they're not that powerful.…There are some basic rules you can lay down,…but XML schema, which we'll look at in the next chapter,…is actually a lot more powerful.…So why would you use a DTD?…Well, if you're taking your XML code…
Author
Released
1/19/2018- What is XML?
- Advantages and drawbacks of XML
- Proper XML syntax
- Working with XML namespaces
- Styling XML tags
- Discovering and creating document content
- Manipulating XML content using XPath and XSLT
- Document type definitions and XML schema
Skill Level Beginner
Duration
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Introduction
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Welcome1m 2s
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What you should know1m 24s
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Exercise files1m 10s
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Setting up the dev tools1m 2s
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1. Getting Started
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What is XML?3m 39s
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XML technologies2m 8s
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Describing data with XML2m 43s
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Real world examples of XML4m 42s
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2. XML Overview
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Types of XML content7m 12s
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Proper XML syntax2m 16s
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Valid documents1m 45s
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XML namespaces3m 24s
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3. Working with XML
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Our first XML file2m 15s
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XML and CSS styles3m 4s
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Styling XML tags3m 54s
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Advanced CSS with XML3m 22s
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4. Manipulating XML with the DOM
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Quick intro to the DOM5m 42s
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Discovering document content3m 17s
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Creating document content7m 59s
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Bringing it all together8m 41s
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5. XML and XPath
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What is XPath?5m 14s
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Taking XPath for a spin5m 32s
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6. XML and XSLT
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What is XSLT?3m 27s
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Using XSLT with XML3m 9s
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7. XSLT Examples
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Simple XSLT4m 11s
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XSLT and CSS1m 43s
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Repeating items5m 43s
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Conditional logic7m 39s
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Sorting data2m 49s
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8. Document Type Definitions
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What is a DTD?1m 45s
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DTD syntax1m 41s
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Declaring elements4m 51s
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Declaring attributes3m 53s
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9. XML Schema
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What is XML schema?2m 4s
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Anatomy of a schema1m 19s
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Declaring elements10m 24s
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Declaring attributes3m 34s
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Conclusion
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Next steps1m 4s
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Video: What is a DTD?