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    3. View Updating and Relational Theory (Theory in Practice) by C. J. Date [Repost]

    View Updating and Relational Theory (Theory in Practice) by C. J. Date [Repost]

    Posted By: Free butterfly
    Date: 15 Dec 2014 23:34:04
    View Updating and Relational Theory (Theory in Practice) by C. J. Date [Repost]

    View Updating and Relational Theory (Theory in Practice) by C. J. Date
    English | December 31, 2012 | ISBN: 1449357849 | 262 Pages | PDF | 19 MB

    Views are virtual tables. That means they should be updatable, just as "real" or base tables are. In fact, view updatability isn’t just desirable, it’s crucial, for practical reasons as well as theoretical ones. But view updating has always been a controversial topic. Ever since the relational model first appeared, there has been widespread skepticism as to whether (in general) view updating is even possible.

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