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Data transformation can be divided into two steps:

# Data Mapping maps Data Element s from the source to the destination and captures any transformation that must occur
# Code Generation that creates the actual transformation program

Data element to data element mapping is frequently complicated by complex transformations that requires one-to-many and many-to-one transformation rules.

The code generation step takes the data element mapping specification and creates an executable program that can be run on a computer system. Code generation can also create transformation in easy-to-maintain computer languages such as Java or XSLT .


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