You need to create a table named ORDERS that contain four columns:1. an ORDER_ID column of number data type2. aCUSTOMER_ID column of number data type3. an ORDER_STATUS column that contains a character data type4. aDATE_ORDERED column to contain the date the order was placed.When a row is inserted into the table, if no value is provided when the order was placed, today‘s date should be used instead.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);
第1题:
A.IEEE802.1Q
B.IEEE802.10
C.MisconfiguredNIC
D.Userconfiguration
E.Alloftheabove
第2题:
【单选题】对于建立在数据库上的DDL触发器,常用的激活DDL触发器的事件不包括()
A.Create_Table,Alter_Table,Drop_Table
B.Create_View,Alter_View,Drop_View
C.Create_Procedure,Alter_Procedure,Drop_Procedure
D.Rollback
第3题:
如果要让某个用户能够在所有模式下建表应该授予此用户哪个权限?
A.create table
B.create any table
C.create all table
D.create * table
第4题:
命令在当前设计中创建一个时钟。
A.create_clock
B.create clock
C.clock_name
D.clock name
第5题:
16、MySQL数据库中,通常将用户写入对应的权限表来控制访问权限的,以下属于用户权限得选项()。
A.User
B.db
C.table_priv
D.columns_priv
第6题:
设置多列布局的属性值为()。
A.columns-width
B.column-count
C.column-gap
D.column-rule