you can see skeleton of dataset here :
A lot of elements are optionals and work with default value. Here is a description of theses elements :
(If you want to set different yype into column value, ou can use "Function for value" which is explained below.)
If the "defaultColumnValueType" element is set at the column Family level, the value has to be a valid regarding to the type. If not set, the value has to be a valid hexByte because the default type is "BytesType".
If you want to set colum values with different types into the same column family, you have to read : How to set column values with different types