单项选择题
The CUSTOMERS table has these columns: CUSTOMER_ID NUMBER(4) NOT NULL CUSTOMER_NAME VARCHAR2(100) NOT NULL STREET_ADDRESS VARCHAR2(150) CITY_ADDRESS VARCHAR2(50) STATE_ADDRESS VARCHAR2(50) PROVINCE_ADDRESS VARCHAR2(50) COUNTRY_ADDRESS VARCHAR2(50) POSTAL_CODE VARCHAR2(12) CUSTOMER_PHONE VARCHAR2(20) A promotional sale is being advertised to the customers in France. Which WHERE clause identifies customers that are located in France?（）
A. WHERE lower(country_address) = "france" B. WHERE lower(country_address) = 'france' C. WHERE lower(country_address) IS 'france' D. WHERE lower(country_address) = '%france%' E. WHERE lower(country_address) LIKE %france%
单项选择题 What is true about updates through a view? （）
多项选择题 What are two reasons to create synonyms? （）
单项选择题 Which SQL statement returns a numeric value?（）
