Question 56 :
If all the values from a cursor have been fetched and another fetch is issued, the output will be : error, last record or first record ?
Question 57 :
A table has the following data : [[5, Null, 10]]. What will the average function return ?
Question 58 :
Is Sysdate a system variable or a system function?
Question 59 :
Consider a sequence whose currval is 1 and gets incremented by 1 by using the nextval reference we get the next number 2. Suppose at this point we issue an rollback and again issue a nextval. What will the output be ?
Question 60 :
Definition of relational DataBase by Dr. Codd (IBM)?
A Relational Database is a database where all data visible to the user is organized strictly as tables of data values and where all database operations work on these tables.