... Uppercase DECLARE, BEGIN, IFDatatypes Uppercase VARCHAR2, BOOLEANIdentifiers and Parameters Lowercase v_sal, emp_cursor, g_salDatabase Tables and Columns Lowercase s_emp, order_date, idCode Naming ... not available in procedural statements:DGREATEST and LEASTDGroup functions: AVG, MIN, MAX, COUNT, SUM, STDDEV, and VARIANCEGroup functions apply to groups of rows in a table, and are therefore ... AttributeDThe datatype of the underlying database column may be unknown.DThe datatype of the underlying database column may change at runtime.ExamplesDeclare variables to store the first and last names...