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Why was the concept of web page consistency introduced and what are its requirements?

April 26, 2017concept consistency introduced requirements web page

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Why was the concept of web page consistency introduced and what are its requirements?

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Web page consistency was added to assure that as changes are made to the database those changes always reflect a picture or price which always match. If the price and picture for an object change they mus both change. As database transactions update the content of the database, the web pages must display a consistent reflection of these updates: the web pages must reflect either the effect of the entire update operation or none of it.