Database Systems You are to use Oracle database system to create the following database STUDENT table contains 4 columns: ID, NAME, GRADE and DEGREE ID 9-character student ID (e.g. CIT081234) .NAME max. up to 30-character student name GRADE must be any of these: 0. 10, 20, 30, 40, 50, 60, 70, 80. 90 and 100 (hint: max. 3 digits, 2 valid digits, last digit is always ZERO and scale is NOT zero) DEGREE 4-character program name (e.g. CSBP) Based on the above database, please answer the following questions in the space provided 1. To check if a database table exists or not, one way is to display its structure. What is the SQL statement to display the structure of STUDENT table? (1 mark) 2. When you run the above SQL statement in Q1, if STUDENT table does not exist, what is the result/response from Oracle system? [0.5 marks) 3. It is a common practice to delete an old existing database table before you create a new one with the same name. Please write the SQL statement to delete a table named STUDENT (1 mark) 4. When you run the above SQL statement in Q3. what is the result/response from Oracle system if a. STUDENT table does not exist already? b. STUDENT table exists? 0.5 marks) [0.5 marks) 5. Now write the SQL statement to create a new table named STUDENT with the 4 columns described above (5 marks) 6. What is the result/response from Oracle system if the STUDENT table created successfully? 0.5 marks) Now enter the following records into the STUDENT table: NAME IONY NG ALI MOHAMED 7. GRADE DEGREE ID CITO80001 CITO59876 CBA061234 CSC075555 CEE042468 UAE000000 80 90 50 60 CSBP ITBP BABP ???? EEBP BABP STEVE JOBS GREY MORE After entering, write the SQL statement to display all records listed with the following new column title (match spelling) (5 marks) ID as Std-ID NAME as $td-Name GRADE as Sid-Grade DEGREE as Program 8. What is the SQL statement to display only the name of the student(s) with grade > 80? (2 marks) 9. When you run the above SQL statement in Q8, what is the result/response from Oracle system? (1 mark) 10. What is the result/response from Oracle system when you run the SQL statement to display only the ID column with query on DEGREE by descending order?(3 mark)