1. A method comprising: compressing a page of column data and storing the compressed page in a format, the format including a first data array, a second data array, and a vector, the first data array storing data elements having a first common characteristic, the second data array storing data elements having a second common characteristic, the first and second characteristics being different; indexing the data elements stored in the first and second array into the vector, including mapping the data elements stored in the arrays; and accessing one or more of the stored data elements, including employing the vector for determining a corresponding offset and array in which the data element is stored.