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From mcasandra <mohitanch...@gmail.com>
Subject Re: Understanding Indexes
Date Thu, 24 Feb 2011 20:55:31 GMT

Either I am not explaning properly or I don't understand the data model just
yet. Please check again:

In below example this is what I understand:

1) UserProfile is a CF
2) 1111 is a row key
3) username is a column. Each row (eg 1111) has username column

My understanding is that secondary indexes can be created only on column
value. Which means I can create secondary index only on username, email etc.
not on 1111. 1111 is the row key, but you keep saying that I need secondary
index, but I am actually asking about index on the row key.

Is my understanding incorrect about this?

> UserProfile = { // this is a ColumnFamily 
>    1111 {   // this is the key to this Row inside the CF 
>        // now we have an infinite # of columns in this row 
>        username: "phatduckk", 
>        email: "[hidden email]", 
>        phone: "(900) 976-6666" 
>    }, // end row 
>    2222 {   // this is the key to another row in the CF 
>        // now we have another infinite # of columns in this row 
>        username: "ieure", 
>        email: "[hidden email]", 
>        phone: "(888) 555-1212" 
>        age: "66", 
>        gender: "undecided" 
>    }, 
>  } 

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