131.  Describe the difference between data and database administration.

132.  What are some of the important security features of a DBMS?

133.  Describe concurrency control.

134.  Explain locking.

135.  Explain issues for database performance.

136.  Describe the difference between homogeneous and heterogeneous distributed database.

137.  What is a distributed database?

138.  What is the difference between horizontal and vertical partitioning?

139.  Explain concurrency transparency.

140.  Explain snapshot replication.