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By: Al DeLosSantos

Thanks for the update Curt. The SAN versus DAS link provides very helpful background information and industry discussion… Regards, Al D.

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By: Mark Callaghan

When you write “(Parallel Data Warehouse, nee’ DATAllegro)” does this mean that DATAllegro technology made it into the PDW product? I am skeptical that much would be useful from a product that re-wrote...

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By: Curt Monash

Mark, The details on that are unknowable from the outside. Microsoft told me in the mid-1990s that they’d already celebrate “Sybase Liberation Day”, because the last lines of Sybase code were gone. A...

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By: Mark Callaghan

Regardless, it is nice to see Microsoft innovate to keep up in the world of data management. Thanks for the summary.

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By: David DeWitt

Mark, 1) There is no DatAllegro code left in PDW. None. As Naughton’s characterizes the system, a classic example of the “stone soap” parable. 2) For details on how queries are executed in PDW works...

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By: Mark Callaghan

I guess I need to read the paper now. Using SQL for query fragments is very interesting. I encountered a DBMS that migrated from using SQL to something else to do the opposite of what PDW wants. It...

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By: Stuart Bunby

Thanks for the update Curt – an interesting read Is PDW a recommended platform for running OLTP workloads? Or would Microsoft typically advocate SQL Server on a non-appliance platform while Hekaton is...

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By: Curt Monash

Stuart, I would think the latter. Since PDW seems to plan every database operation twice (once globally and once at every individual node), it’s not ideal for transactional updates.

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By: Microsoft SQL serverin tulevaisuus « Olipa kerran Bigdata

[...] Notes on Microsoft SQL Server [...]

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By: Layering of database technology & DBMS with multiple DMLs | DBMS 2 :...

[...] e.g. Greenplum (especially early on), Aster (ditto), DATAllegro, DATAllegro’s offspring Microsoft PDW (Parallel Data Warehouse), or [...]

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By: NoSQL vs. NewSQL vs. traditional RDBMS | DBMS 2 : DataBase Management...

[...] Microsoft has now launched Hekaton, about which I long ago wrote: I lack detail, but I gather that Hekaton has some serious in-memory DBMS design features. [...]

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