This term our unit is about branching databases.
A branching database is used to classify groups of objects. It is used to help identify the objects by answering questions with either ‘yes’ or ‘no’. Branching databases can also be called binary trees. They are called branching because each time a question is asked there can be two answers, making two branches. When you put all of the questions and answers together in the database, it forms the shape of a tree (upside down).