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From John Haigh <haig...@gmail.com>
Subject Re: How to create data model from RDBMS ERD
Date Thu, 23 Jun 2011 17:04:00 GMT
Here are some useful links that will help you learn how to create a data model:

WTF is a SuperColumn? An Intro to the Cassandra Data Model -
http://arin.me/blog/wtf-is-a-supercolumn-cassandra-data-model

A Java Implementation of the Blog Data Model created by Arin
Sarkissian in his blog post "WTF is a SuperColumn?" -
http://sleeplessinslc.blogspot.com/2010/11/apache-cassandra-with-hector-example.html

Cassandra’s data model cheat sheet - http://www.javageneration.com/?p=70

A Quick Introduction to the Cassandra Data Model -
http://maxgrinev.com/2010/07/09/a-quick-introduction-to-the-cassandra-data-model/

Installing and using Apache Cassandra With Java Part 2 (Data model) -
http://www.sodeso.nl/?p=108

http://www.rackspace.com/cloud/blog/2010/05/12/cassandra-by-example/

http://www.coraltreemedia.com/resources/cassandra-data-model.php

http://www.juhonkoti.net/2010/09/25/example-how-to-model-your-data-into-nosql-with-cassandra

http://wiki.apache.org/cassandra/ArticlesAndPresentations

Sample Blog Data Model - http://code.google.com/p/nosql-blog-example/

Sample Data Insert Example -
http://blog.maescool.be/2010/05/12/what-i-have-learned-about-cassandra-nosql-db/

http://blog.maescool.be/2010/05/12/what-i-have-learned-about-cassandra-nosql-db/

John Haigh



On Thu, Jun 23, 2011 at 12:43 PM, mcasandra <mohitanchlia@gmail.com> wrote:
> How should one go about creating a data model from RDBMS ER into Big Table
> Data model? For eg: RDBMS has many indexes required for queries and I think
> this is the most important aspect when desiging the data model in Big Table.
>
> I was initially planning to denormalize into one CF and use secondary
> indexes. However I also read that creating secondary indexes have
> performance impact. So other option is to create inverted index. But it also
> seems to be bad to have too many CFs. We have requirements to support high
> volume min of 500 writes + 500 reads per sec.
>
> What would you advise?
>
> --
> View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/How-to-create-data-model-from-RDBMS-ERD-tp6509041p6509041.html
> Sent from the cassandra-user@incubator.apache.org mailing list archive at Nabble.com.
>

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