Hi
Pauley - your needs seem to be not too daunting so some of the iPad apps should serve your purpose - now, there are likely a number of options but I can only suggest a few that are on my iPad that may do for you?
Numbers - part of Apple's iWork suite - emulates Excel, i.e. a spreadsheet - a consideration if that format will suit your purposes?
Bento - an iPad app from FileMaker - a more specific database w/ plenty of templates, one of which might be just right for you? Check
HERE for more information; both of these programs can be purchased at a modest price.
I'm sure others may have additional suggestions, but these are certainly a consideration - good luck in your choice!