I-Think refers to Implementation thinking. I-Thinkers focus on how to make their previous database design adapt to a business requirements change by using 4 join files with 3 concatenated and 5 sub-stringed partial join keys. I-Thinkers often create complex database structures that are difficult to maintain. I-Thinkers generally design physical databases. They work from their own experiences, sometimes extended by the grandfather-father-son learning technique.
The I-Thinker treats the modeling with caution, because it is really just a tool for entering their data descriptions to build a file. (This is a design approach actively encouraged by some modeling tools.) Sometimes purist I-Thinkers produce optimal results. This most likely occurs in an organization with a very low "performance budget", that values low computer resource usage above all else.
Most purist I-Thinkers implement a database that: