Semistructured Data Integration Example
---------------------------------------

To run the demonstration:

(1) Run "make demo"

    This will first create the Yatta model (named "yatta") for semistructured 
    data in the AutoMed repository. Then the schemas for the sources 
    "source_y1" and "source_y2" will be created and integrated together. 
    The formats of the sources are also defined and stored in the repository. 

(2) Run "make testyattawrapper" to test the wrapper for the Yatta model 

    This will demonstrate an example of a query for querying semistructured 
    data sources represented in the Yatta model. The example will also 
    show an example of using IQL query in querying the semistructured data 
    represented in the Yatta model.

(3) Run "make testssdexample" to test the query processor for the 
    integration of semistructured data sources  

    This will demonstrate IQL queries processor and data migration for 
    semistructured data 

    Note that this example is not giving the right results at the moment. 	

