PDF Notes: Chap1_Intro_XML

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    What is interoperability in e-health?

    Enables diverse systems to exchange and use data effectively.

    Why is interoperability vital in healthcare?

    Ensures continuity of care and reduces errors.

    What role does XML play in interoperability?

    Defines data structure and facilitates data parsing.

    How does XML differ from SGML?

    XML is simpler and designed for data transport, not display.

    What is a well-formed XML document?

    Follows XML syntax rules but may not adhere to a schema.

    What is the purpose of XSD?

    Defines the structure and data types for XML documents.

    What is the difference between DTD and XSD?

    XSD supports data typing and namespaces; DTD does not.

    What does a unique key constraint in XSD ensure?

    Values must be unique if they exist, allowing for data integrity.

    What is the significance of the root element in XML?

    It encapsulates all other elements in the document.

    What happens if an XML document is not well-formed?

    A parser will reject it, indicating a fatal error.

    What is the function of namespaces in XML?

    Avoids naming conflicts by qualifying element names.

    What is a complex type in XSD?

    Defines elements that can contain other elements or attributes.

    What does the xs:sequence compositor do?

    Specifies that child elements must appear in a defined order.

    What is the purpose of the xs:choice compositor?

    Allows only one of the specified child elements to appear.

    What is a simple type in XSD?

    An element that contains only text and no child elements.

    What is the role of attributes in XML?

    Provide additional information about elements.

    What does the term 'validation' mean in XML?

    Ensures that an XML document adheres to a defined schema.

    What is the significance of the prologue in XML?

    Indicates the XML version and character encoding used.

    What is the consequence of incorrect nesting in XML?

    Results in a well-formedness error, causing rejection.

    What does the xs:pattern facet do?

    Validates the format of string values using regular expressions.

    What is the purpose of the xs:all compositor?

    Allows child elements to appear in any order, but only once.