ten.rebase(data,metadata)
    
    Set a new temporary table (worksheet) and returns a base op.
Syntax
ten.rebase(data,metadata)Description
ten.rebase takes the DataFrame and adds it to a
                cache of temporary session tables. Then it returns a base ops (singleton list) that
                references the temporary session table.
Arguments
- data
- A DataFrame.
- metadata
- A metadata object from ten.MetaData().
Note: Each call to 
            ten.rebase() has the side effect of creating a
                    temporary table.Returns
ten.rebase() returns a base op.
