Reading data from different MySQL databases using dynamically
loaded connection parameters
The Job in this scenario is made of two subJobs. The first subJob aims at
dynamically loading the context parameters from two text files, and the second subJob uses
the loaded context parameters to connect to two different databases and to display the
content of an existing database table of each of them. With the context settings in the
Job, we can decide which database to connect to and choose whether to display the set
context parameters on the console dynamically at runtime.