Explanation/Reference:
The core ORA material is extended via architecture perspectives. There are two types of perspectives:
Technology and Industry (not E).
B: Technology perspectives extend the core material by adding the unique capabilities, components, standards, and approaches that a specific technology strategy offers.
SOA, BPM, EPM/BI, and EDA are examples of perspectives for ORA.
Each technology strategy presents unique requirements to architecture that includes specific capabilities, principles, components, technologies, standards, etc. Rather than create another reference architecture for each strategy, ORA was designed to be extensible to incorporate new computing strategies as they emerge in the industry.
In order to present the reference architecture in the most effective manner, each new technology strategy adds a perspective to ORA. This enables the reference architecture to evolve holistically. New computing strategies extend the core material, providing further insight and detail as needed.
A perspective extends the ORA core collateral by providing views, principles, patterns, and guidelines that are significant to that technology domain yet cohesive with the overall ORA.
Industry perspectives extend the core material by adding the business functions, business processes, data entities, software capabilities and components that an industry vertical requires. Retail, Financial, Telco, and Pharma are examples of industry perspectives for ORA.
Reference: IT Strategies from Oracle, An Overview, Release 3.0