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Canonical Schema

Canonical Schema (Erl)

How can services be designed to avoid data model transformation?

Problem

Services with disparate models for similar data impose transformation requirements that increase development effort, design complexity, and runtime performance overhead.

Solution

Data models for common information sets are standardized across service contracts within an inventory boundary.

Application

Design standards are applied to schemas used by service contracts as part of a formal design process.

Impacts

Maintaining the standardization of contract schemas can introduce significant governance effort and cultural challenges.

Architecture

Inventory, Service

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Canonical Schema: Multiple services implemented as Web services have standardized XML schema definitions as a result of applying this pattern.

Multiple services implemented as Web services have standardized XML schema definitions as a result of applying this pattern.