Flashcards on XML Schema Definition (XSD) Guide
XML Schema Definition (XSD) Guide for Students
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XML Schema (XSD)
79 cards
Card 1
Question: What is XML Schema Definition (XSD)?
Answer: An alternative to DTD; it describes the structure and data of an XML document using XML (an *.xsd file) and namespaces.
Card 2
Question: Why is XSD used?
Answer: To specify a data format, understand how to create an XML document, and verify that XML is valid and suitable for further processing.
Card 3
Question: What are the main things that can be defined in an XML document using XSD?
Answer: Document elements, element attributes, hierarchical structure (children, lists), element order (sequence, all, choice), and the number of element occu
Card 4
Question: What typing and restriction options does XSD provide?
Answer: It defines data types (including custom ones and restrictions), allows setting default or fixed values, and enables linking content to other documents
Card 5
Question: What are the advantages of using XSD over DTD?
Answer: More features (data types, content validation), extensibility, same syntax as XML, namespace support, and more precise validation (e.g., length, data
Card 6
Question: In what ways is DTD better than XSD?
Answer: It's simpler, clearer, and shorter for small documents and basic validation.
Card 7
Question: What is the general process for validating XML using XSD?
Answer: 1) Create an XML file; 2) Create an XSD file; 3) Link the XML to the XSD; 4) Check the well-formedness of both documents; 5) Validate the XML against
Card 8
Question: What does 'well-formed' XML mean?
Answer: It's a check of XML syntax: correct nesting, closing tags, quotes, etc.
Card 9
Question: How is an XML document linked to an XSD within the XML itself?
Answer: Using the declaration xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" and the xsi:schemaLocation attribute (which contains the namespace and the
Card 10
Question: What does xmlns:xsi mean and why is it used?
Answer: It's the namespace for XML Schema instances (http://www.w3.org/2001/XMLSchema-instance); the 'xsi' convention indicates that an XML Schema is being at