Which of the following statements are true regarding Sybase IQ data types?(Choose 3)

题目

Which of the following statements are true regarding Sybase IQ data types?(Choose 3)
Use UNSIGNED INTEGER versus INTEGER whenever possible
DATETIME,SMALLDATETIME and TIMESTAMP are different data types
VARCHAR compare faster than CHAR
DATETIME,SMALLDATETIME and TIMESTAMP are identical data types.
CHAR compare faster than VARCHAR
Use INTEGER versus UNSIGNED INTEGER whenever possible

答案

Use UNSIGNED INTEGER versus INTEGER whenever possible
DATETIME,SMALLDATETIME and TIMESTAMP are different data types
CHAR compare faster than VARCHAR