I have been in this industry for 6 years and such jobs are my daily practice.
I can assure you that if you work with me once, you will always work with me for these kind of projects.
I have been read your Project description throughout.
First of all I need to know that in which format your large database is. (MS Access, SQL, My SQL etc.)
You can see my profile for more details .
See some screenshots of my previous work in my portfolio.
Let's discuss for even more details before you award me the project.
Thank you in anticipation.
Have a nice day...