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Old 02-14-2013, 03:50 PM   #1
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LXer: Database Integrity and Web Applications

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Want to improve the integrity of your data? Place constraints in the database, as well as in your application. NoSQL, the catchall phrase for non-relational databases, is all the rage among Web developers. However, it's somewhat unfair and unhelpful to use the term NoSQL to describe them, given the variety of technologies involved. Even so, there are some fundamental differences between traditional relational databases and their NoSQL counterparts. For one, as the name implies, NoSQL databases don't use the standard SQL query language, and use either their own SQL-like language (for example, MongoDB) or an object-oriented API. Another difference is the lack of two-dimensional tables; whereas SQL databases operate solely with such tables, NoSQL databases eschew them in favor of name-value pairs or hash-like objects. And finally, NoSQL databases typically lack the features that led to the development of relational databases, namely transactions and data integrity.



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