The holder of this badge has completed the following course by O'Reilly Media, Inc. The holder of this badge is capable of understanding and applying the Closed World Assumption (CWA) in the database world. They can effectively handle missing information without the need for nulls or three-valued logic, and recognize the fundamental differences between the CWA and the Open World Assumption (OWA). They can also utilize the CWA in predicates involving negation or conjunction.

• Type Learning
• Level Advanced
• Time Hours
• Cost Paid