2 days vs 2 weeks
What I did was I use two computes to finish the job well. In my previous database it would be quite difficult but possible since I only had 1 table. By having multiple tables I realize a lot of things most especially when errors occur during conversion. One is when my converter generates a connection timeout error(due to some network connection problem) I can easily truncate all the specific table and start all over again witout worrying too much about how am I script it to remove all those records without affecting records that are not included in a certain district.
This time the path is breeze, smooth and ease. Wish me luck that I may complete this one. A hundred more to go in just two months.