Databases help you locate a variety of information sources -- basic introductory information on a topic (dictionary/encyclopedias), specific/in depth journal articles, high quality images. Below are selected key databases to assist you with your discovery and research in art history.
Some tips to keep in mind:
Museum websites are also a great source for images! Many major museums have options to search their collections online.
Remember, not everything in these databases will be scholarly and/or peer-reviewed. Magazine articles and other sources can also be helpful, but be sure to pay attention to the type of information you're examining!