Ii. XML DTD and Schema

1, DTD simple introduction

2. Getting Started with schema

The purpose of the schema is to write a restricted file of XML in a more logical way (based on XML syntax)

Schemas can use namespaces to support multiple elements with the same name

Schema can be very good to complete the modification of Java or all objects and provide a large number of data types

2.1. Namespaces

Introduction of Schema in XML

Introduction via File path

2.2. Elements and attributes

2.3. Related constraints
3. In-depth schema
3.1, the creation of the data model
3.2, the relevant design solutions
Russian Doll

There is only one root element that is written in a nested way

Advantages: Clear structure, only one root element

Cons: Elements cannot be reused

Salami Slice

Advantage: Ability to maximize reuse

Cons: The root element is not clear

Venetian Blind

3.3. Schema and Java conversion

Use XJC to complete the schema-to-Java transformation

4. Java and XML
4.1. JAXB handles Java and XML
4.2. Stax processing XML
Cursor-based lookups

Finding based on iterative model

Use of filters

Use of XPath

Creating XML Using Xmlstreamwriter

Update node information with transformer

Ii. XML DTD and Schema