Reduce file size

Anonymize data

Make variables comparable

Eliminate skewness

Java and C++

PHP and Ruby

JavaScript and HTML

Python and R

Random values key

Encrypting key

References a primary key in another table

Last record identifier

Left Join of Table B and Table D, and then Inner Join with Table A

Inner Join of Table B and Table D, and then Inner Join with Table A

Inner join of Table B and Table D, and then Inner Join with Table C

Outer Join of Table A and Table B and then Right Join with Table D

Left Join of Table D and Table B

Left Join of Table B and Table D

Inner Join of Table B and Table D, and then Inner Join with Table A

Left Join of Table D and Table B, and then Inner Join with Table C

Inner join of Table B and Table D, and then Inner Join with Table C

Left Join of Table B and Table D, and then Outer Join with Table C

Left Join of Table D and Table B and then Outer Join with Table A

Outer Join of Table B and Table D, and the Left Join with Table A

Inner Join of Table B and Table D, and then Inner Join with Table A

Outer Join of Table B and Table D, and the Outer Join with Table A

Left Join of Table D and Table B

Right Join of Table D and Table B

Inner Join of Table D and Table B

Outer Join of Table B and Table D

(Value - mean) / Std. Dev

Value * mean

(Value - min) / (max - min)

log(Value + 1)