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From Steve Lihn <>
Subject Re: how does cassandra compare with mongodb?
Date Thu, 13 May 2010 19:48:27 GMT
What is changing? A more flexible schema or no need to restart (some kind of

Mongo guys claims that Mongo's advantage is a schema-less design. Basically
you can have any data structure you want and you can change them anyway you
want. This is done in the name of "flexibility", but I am not sure this is a
good practice. People argued for years that perl is bad because it is
typeless and java is strong typed and is better. Now the java community is
developing a database like Mongo that is schema-less. How does this
complements the strong-type argument?

The less requirement is put on database schema design, the more burden is
put on the application to maintain data integrity. Why is this a good trend?
Can someone kindly explain?


On Thu, May 13, 2010 at 1:22 PM, Vijay <> wrote:

> "Cassandra requires the schema to be defined before the database starts,
> MongoDB can have any schema at run-time just like a normal database."
> This is changing in 0.7
> Regards,
> </VJ>

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