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Are there benefits to using both Teradata and a DB2 database?

Mark Whitehorn EXPERT RESPONSE FROM: Mark Whitehorn

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QUESTION POSED ON: 15 April 2009
I'm wondering why companies choose Teradata along with DB2. My company has a mainframe and good database maintenance on DB2, but some of our applications are using the Teradata database. I don't understand why the company is going for Teradata, while we have a very good database like DB2. Any idea why?

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DB2 is a fabulous relational database engine that is optimized for transactional processing. So it is a great engine for running your operational databases. Teradata is also a relational database engine, but it is optimized for analytical queries, which is unusual for a relational database engine. So my guess is that your company is using DB2 to run its operational databases and, at regular intervals, is copying the data to the Teradata database for analysis.


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