I'm attempting to create a Cassandra schema for stock price data.

Each records has the following fields:

* stock symbol
* date
* open price
* close price

As you can see there is no single field that can act as a unique identifier. 

I'd like to create something like:

```
Stocks { // column family
    ????? { //row key - unique id
        symbol: 'GOOG'        // column  -- secondary index
        date: '2005/01/01'    //column   -- secondary index
        open: '500'           //column
        close: '501'          //column
    }
}

```

As you can see I want to take advantage of the [secondary index feature](http://www.datastax.com/dev/blog/whats-new-cassandra-07-secondary-indexes) in cassandra 0.7. 

When inserting the data into the database, should I just create a TimeUUID for each record? That seems like the most straightforward route.

Note: I do not work in the financial industry, I'm just using this dataset to wrap my mind around Cassandra.