XML

XML

Database
1. Yes
  1. Hierarchical
  2. Unicode
  3. Human readable
  4. Schema languages
    1. XML schema
    2. DTD
  5. Query languages
    1. XQuery
    2. XPath
  6. APIs
    1. SAX
    2. DOM
    3. JDOM
2. No
  1. Inefficient
    1. Verbose
    2. Parsing
  2. Lacks common technologies
Data-centric
1. XML transport
2. Machine consumption
  1. Structure
  2. No mixed content
Doc-centric
1. Human consumption
2. Mixed content
3. Irregular structure
XML DBs
1. XML Enabled (XEDB)
  1. XML exchanges
  2. Relational data model
  3. XML Mapping layer
    1. Storage
    2. Retriveal
  4. No visibility
  5. DB schema match XML schema
  6. Relational to XML Schema mapping
    1. Tables based
      1. Same structure
      2. Rows are tables
    2. Object relational
      1. Objects are tables
      2. Properties to columns
      3. Inter-object relationships are foreign/primary keys
2. Native XML (NXD)
  1. Logical model of XML doc
  2. XML doc as storage
  3. Physical storage not req
3. Hybrid XML (HXD)

Resumo de Recurso

	Criado por valdearg mais de 11 anos atrás