README

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=                            Document for Homework 1                            =
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                             1. Cartesian-Product program

Write data in 'Cartesian-Product_file1', 'Cartesian-Product_file2' files. 

Print command:

    $ python Cartesian-Product.py

Result will display in terminal

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                             2. Natural Join program

Write data in 'Natural_Join_file1', 'Natural_Join_file2' files. 

First and third columns in Natural_Join_file1 compare with second and third columns in Natural_Join_file2.

Print command:

    $ python Natural_Join.py

Result will display in terminal

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                             3. Outer Join program

This is left outer join.

Write data in 'Outer_Join_file1', 'Outer_Join_file2' files. 

First and third columns in Natural_Join_file1 compare with second and third columns in Natural_Join_file2.

Print command:

    $ python Outer_Join.py

Result will display in terminal


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