As starting point, we have a database built on
File Maker [4], where we have stored the different data
related to the patients and of interest for the investigation:
clinical data, data of evolution, catheterism variables,
concentration of leukocytes and enzymes, genetics
variables, quantification of the ST segment evolution and
variables obtained through magnetic resonance imaging
(delayed-enhancement, perfusion, viability). The stored
data are mainly of four types: Number, Text, Date and
Time. Thanks to MySQL, we can define more specific
data types within each category. There are also values
which were obtained from calculations among certain
fields. The first option in order to create the database is a
basic migration from FileMaker to MySQL, consisting of
the following steps: