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【单选题】

You need to create a table named ORDERS that contain four columns:<br /> 1. an ORDER_ID column of number data type<br /> 2. aCUSTOMER_ID column of number data type<br /> 3. an ORDER_STATUS column that contains a character data type<br /> 4. aDATE_ORDERED column to contain the date the order was placed.<br /> When a row is inserted into the table, if no value is provided when the order was placed, today&#39;s date should be used instead.<br /> Which statement accomplishes this? ()

A、CREATE TABLE orders ( order_id NUMBER (10), customer_id NUMBER (8), order_status VARCHAR2 (10), date_ordered DATE = SYSDATE);

B、CREATE TABLE orders ( order_id NUMBER (10), customer_id NUMBER (8), order_status VARCHAR2 (10), date_ordered DATE DEFAULT SYSDATE);

C、CREATE OR REPLACE TABLE orders ( order_id NUMBER (10), customer_id NUMBER (8), order_status VARCHAR2 (10), date_ordered DATE DEFAULT SYSDATE);

D、CREATE OR REPLACE TABLE orders ( order_id NUMBER (10), customer_id NUMBER (8), order_status VARCHAR2 (10), date_ordered DATE = SYSDATE);

E、CREATE TABLE orders ( order_id NUMBER (10), customer_id NUMBER (8), order_status NUMBER (10), date_ordered DATE = SYSDATE);

F、CREATE TABLE orders ( order_id NUMBER (10), customer_id NUMBER (8), order_status NUMBER (10), date_ordered DATE DEFAULT SYSDATE);

更多“ You need to create a table named ORDERS that contain four columns:<br /> 1. an ORDER_ID column of number data type<br /> 2. aCUSTOMER_ID column of number data type<br /> 3. an ORDER_STATUS column that contains a character data type<br /> 4. aDATE_ORDERED column to contain the date the order was placed.<br /> When a row is inserted into the table, if no value is provided when the order was placed, today&#39;s date should be used instead.<br /> Which statement accomplishes this? ()”相关的问题
第2题

A、A. CREATE ROLE manager; GRANT create table, create view TO manager; GRANT manager TO BLACK, CLARK;  B、B. CREATE ROLE manager; GRANT create table, create voew TO manager; GRANT manager ROLE TO BLACK, CLARK;  C、C. GRANT manager ROLE TO BLACK, CLARK; GRANT create table, create voew TO BLACK CLARK; ***MISSING***  

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第9题

A、CREATE ROLE manager; GRANT create table, create view TO manager; GRANT manager TO BLACK, CLARK;  B、CREATE ROLE manager; GRANT create table, create voew TO manager; GRANT manager ROLE TO BLACK, CLARK;  C、GRANT manager ROLE TO BLACK, CLARK; GRANT create table, create voew TO BLACK CLARK; ***MISSING***  

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