Database software for mac

Hello friends:

Can anyone help me in picking a database software. I need to create two seperate clients databases, one with about 150000 and the other with about 10000 client's info, and it should also have a bring forward date. I have zero knowledge on it and need help, it should also be user friendly, help would be much appreciated

Thanks

Take a look at Bento.

Personal Database and Organizer Software | Bento 4

The same company also makes Filemaker, a more powerful database program -- but really a client database is child's play database-wise.

You may also want to look at Daylite.