XML Schema API Reference - System XML

Overview

This document provides a detailed overview of the XML Schema Definition (XSD) specification.

Key Concepts

• XML is a markup language that uses tags to define data structures.
• XSD is a schema language used to define the structure of an XML document.
• Schemas describe the valid structure of an XML document.

Basic Elements

The basic elements in an XML document include:

• Root Element: The top-level element that encapsulates the entire document.
• Elements: Represented by tags, enclosed in angle brackets.
• Attributes: Provide additional information about an element.

Data Types

Common data types include:

• String: Textual data.
• Integer: Whole numbers.
• Float: Decimal numbers.
• Boolean: True/False values.
• DateTime: Date and time information.

XSD Syntax

XSD uses a specific syntax for defining elements, attributes, and data types. Key features include:

• Tag Names: Elements are defined by their tag names.
• Attribute Names: Attributes are specified with the 'name' attribute.
• Data Type Declarations: Specify the data type of elements.

Example

Consider this simple XML document:

This is a valid XSD.

Next Steps

For more detailed information, refer to the official XML Schema Definition specification.