QUESTION 1 The columns of a table have a lill ordering O right-to-left O left-to-right O bottom-to-top QUESTION 2 SQL tables are allowed to have null values while relations are not. O True O False QUESTION 3 A relation schema (or alternatively a logical scheme) is pecified in sQLuDDL by the statement. QUESTION 4 A relation is called a(n) n SQL QUESTION 5 The result of a CREATE TABLE statement is referred to as a l o relation table O base relation base table O create relation QUESTION6 The following is a data type group supported by SQL-92. () double float String Roman largeint