Build and fill searchable database I can post on my website

I have over 6 years of weekly foreclosure lists (say 250 lists with an average of 50 foreclosures per list) which I would like to have a database created for and then have the data entered into the database. I also need the database to be searchable because I plan on uploading the database to my website to make available for public use through my site. I will also need administration access because I will also need to have a way to update the database with new lists on a weekly basis. It is not allowing me to add files or I would upload a sample weekly list.