You are talking about two totally different technologies here.
Access is a relational database management system. That means it is used to store data in a relational manner - parent/child records.
Sharepoint is a web-based collaboration model. It is used to create websites by which users can share ideas and access to data they created in other applications, such as Word, Access, Excel, and even static documents like pdf.
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People think it must be fun to be a super genius, but they don't realize how hard it is to put up with all the idiots in the world. (Calvin from Calvin And Hobbs)
Robert L. Johnson III
CCNA, CCDA, MCSA, CNA, Net+, A+, CHDP
VB/Access Programmer