thank you very much for your helpful answers, in fact I'm doing a research
on all Nosql technologies and Cloud data management systems in order to
a system for my particular highly heterogeneous data. That's why I need to
know what each of them can offer and what are the potential limitations.
I saw some people using Datastore but they have a replica for there data on
a RDBMS only to process ad-hoc queries. So thank you vry much for the
BigQuery link
I didn't hear about it before.

As it's an interesting discussion (I hope for you too), do you think that
the other NoSql (hbase, Hive, cassandra ) have the same problem of
ad-hoc queries and so can we use BigQuery with those databases or it's
designed for google projects?

Le mercredi 27 juin 2012 12:39:00 UTC+2, Baraa Mohamad a écrit :

I'm very interested in BigTable as I'm working with a very
huge/ever-growing heterogeneous data.
In order to assure my understanding I have two questions please:
- Can I perform ad-hoc/analytical queries over Bigtable or it's designed
for historical queries?
- I read that BigTable does not support general transactions across rows
keys", I'm not sure that I understood exactly
this point so some more explications or examples would be very helpful
for me.

Thank you for your help ,

Best Regards,
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