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We can identify a set of tools that enable the construction of portals
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These are roughly equivalent to the tools needed to build a general application based on "object web technologies"
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There is also an architecture (explained ad nauseam later) implying multi-tier systems with standard compliant interfaces
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Object Web is Architecture standard for portals
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A common portal architecture means that portals can be conveniently linked together
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e.g. the 3 portals to biology, chemistry, and physics naturally form portal to science
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