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CHASM trap and FAN trap

While designing universe, a situation occurs when loops and traps occurs. What is CHASM trap and a FAN trap?
Asked by: jasmeetsbawa | Member Since May-2010 | Asked on: May 8th, 2010

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eussusn24

Answered On : Jul 6th, 2010

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Chasm trap is type of join path between 3 tables. When two many-to-0ne join converges to a single table and there is no context  in place to separate the converging paths.Fan trap is another type of join path between 3 tables, where a one-to-many join links a table which in turn is linked by another one-to-many join.

  
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