6.Which of the following is not true about B+ trees?

7.___________ controls are incorporated in the data management system that restrict access to data and also restrict actions that people may take when they access data.

8.Data that describes the properties or characteristics of other data is called ______________

9.The goal of ____ is the protection of data from accidental or international threats to its integrity and access.

10.A ____ constraint specifies the number of instances of entity B that may associated each instance of entity.