-----------------------------------------------------------------------------------
                       
                                HaExcel Framework
                         
-----------------------------------------------------------------------------------


This framework allows to transform spreadsheets into relational databases and back. 
A set of data refinement rules is used to map a tabular datatype into a relational 
database schema. Having expressed the transformation of the two data models as 
data refinements, we obtain for free the functions that migrate the data. We use 
well-known relational database techniques to optimise and query the data. Because
data refinements define bidirectional transformations we can map such database back 
to an optimised spreadsheet.


The contrib folder has libraries necessary to use the developed tool. 
The libraries folder has all the source code. Inside of it Data/Transform has the
modules with the 2LT framework. HaExcel has all the other source files.


To installation instructions please read the INSTALL file.


For more details check the project web page www.di.uminho.pt/~jacome and enter the
HaExcel project or send an e-mail to the author jacome@di.uminho.pt.