1. Explain the difference between (1.0 Mark) a) Authentication and Authorization b) System and Object Privileges 2. Discuss the concept of SGA and PGA memory in Oracle 11g. (1.0 Mark) 3. Discuss the difference between SQL*Plus and SQL Developer tools that can be used to access Oracle Database. (1.0 Mark) 4. Consider that you have developed an exam management application using Java technology. Write four steps that you will require to connect the application with Oracle 11G database. (1.0 Mark) 5. List any four web services that can be integrated with the oracle database. (1.0 Mark) 6. Suppose that you do not have a local database and you wish to use SQL*Plus and other tools for connecting to a remote Oracle database. Also, you wish to use Oracle Spreadsheet Add-In for predictive analytics. What is the name of the software that you need to install for this task