Which of the following technologies can be used to establish a federated data architecture capable of exposing standardized data models while abstracting disparate data sources? Select the correct…

Question

Options

• AXML Schema
• BXQuery
• CWS-BPEL
• DWS-Federation

• A
  76% (16)
• B
  14% (3)
• C
  5% (1)
• D
  5% (1)

Explanation

XML Schema is the correct choice because it defines the structure, content, and semantics of XML documents, enabling a federated data architecture to impose a common, standardized data model across heterogeneous sources - each source can expose data in its own native format while being mapped to a shared schema that consumers interact with uniformly.

XQuery (B) is a query language for retrieving and manipulating XML data; it can access federated sources but doesn't define or enforce standardized data models. WS-BPEL (C) is a process orchestration language for composing web service workflows - it's about business process execution, not data modeling or source abstraction. WS-Federation (D) deals with identity and authentication federation across security domains (SSO), not data architecture.

Memory tip: Associate Schema with shape - XML Schema defines the "shape" that all disparate data sources must conform to, acting as the contract in a federated model. If the answer is about defining structure and standardization, Schema is your anchor.

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