I have been recruited to manage and upgrade a database that is currently running v4. Yes, this is 2017 and there is a business running v4. This is not a typo. The current database has nearly 7000 records. I am wondering if there is an automated way for me to compare 2 files to verify the record numbers match the same "LAST NAME"? I am wanting to know if this is possible prior to upgrading and as part of my upgrade process.