A.They accept only a single argument 
B.They can be nested only to two levels 
C.Arguments can only be column values or constants 
D.They always return a single result row for every row of a queried table 
E.They can return a data type value different from the one that is referenced

A.SELECT cust_last_name, cust_credit_limit FROM customers ORDER BY cust_credit_limit DESC
B.SELECT cust_last_name, cust_credit_limit FROM customers ORDER BY cust_credit_limit
C.SELECT cust_last_name, cust_credit_limit FROM customers ORDER BY cust_credit_limit NULLS LAST
D.SELECT cust_last_name, cust_credit_limit FROM customers ORDER BY cust_last_name, cust_credit_limit NULLSLAST

A.field names in the SELECT statement 
B.the FROM clause in the SELECT statement 
C.the HAVING clause in the SELECT statement
D.the GROUP BY clause in the SELECT statement 
E.the WHERE clause in only the SELECT statement 
F.the WHERE clause in SELECT as well as all DML statements

A.Both USING and ON clauses can be used for equijoins and nonequijoins 
B.Amaximum of one pair of columns can be joined between two tables using the ON clause 
C.The ON clause can be used to join tables on columns that have different names but compatible data types 
D.The WHERE clause can be used to apply additional conditions in SELECT statements containing the ON or the USING clause 

A.It ignores NULL values 
B.Reversing the order of the intersected tables alters the result 
C.The names of columns in all SELECT statements must be identical 
D.The number of columns and data types must be identical for all SELECT statements in the query 

A.CREATE SYNONYM ord FOR orders; This command is issued by OE 
B.CREATE PUBLIC SYNONYM ord FOR orders; This command is issued by OE 
C.CREATE SYNONYM ord FOR oe.orders; This command is issued by the database administrator 
D.CREATE PUBLIC SYNONYM ord FOR oe.orders; This command is issued by the database administrator 

A.when a DELETE statement is executed 
B.when a ROLLBACK command is executed 
C.when a PL/SQL anonymous block is executed 
D.when a data definition language (DDL) statement is executed 
E.when a TRUNCATE statement is executed after the pending transact ion

A.It can have a maximum of five expressions in a list 
B.It returns the highest NOT NULL value in the list for all rows 
C.It requires that all expressions in the list must be of the same data type 
D.It requires that at least one of the expressions in the list must have a NOT NULL value

A.RMAN will attempt to make the backup run as fast as possible without any IO limitations. 
B.RMAN will automatically restrict the number of channels in use to one. 
C.RMAN will spread the backup IO over the total duration stated in the backup command.
D.RMAN will skip any datafile that currently is involved in an IO operation. RMAN will retry backing up the datafile later and an error will be raised at the end of the backup if the datafile cannot be backed up. 
E.Datafiles will be backed up; those having the lowest current number of IO operations will be backed up first. 

A.V$SESSION_EVENT 
B.V$SESSION 
C.V$W0041ITS
D.V$WAITSTAT 
E.V$SESSION_LONGOPS