NJIT's Information Systems Department has created a review video and a 5-part PowerPoint tutorial to help you review essential database knowledge.
Review video for Database section of graduate placement exam: Click Here
Tutorial Part 1: Database Concepts
Tutorial Part 2: Data Modeling
Tutorial Part 3: Relational Model
Tutorial Part 4: SQL Overview
Tutorial Supplement: Relational Database Concepts Using Microsoft Access
Note that NJIT classes do not use MS Access. This is just for your self learning. The same database elements could be implemented on any relational database, including the free products MySQL and Base (part of OpenOffice).