多项选择题
A. string
B. character
C. integer
D. calendar
E. numeric
F. translation
G. date
H. conversion
单项选择题 A SELECT statement can be used to perform these three functions: 1. Choose rows from a table. 2. Choose columns from a table 3. Bring together data that is stored in different tables by creating a link between them. Which set of keywords describes these capabilities? （）
单项选择题 Which is a valid CREATE TABLE statement? （）
多项选择题 Which three are true? （）