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【多选题】
Choose all of the true statements about good working/studying methods, procrastination and how to overcome procrastination.A.
Keep a planner journal and keep track of the methods and techniques that work best for you.
B.
Make sure to put yourself in an environment with many distractions to help train yourself to overcome your procrastination urges.
C.
Making a task list is best done at night, right before you go to sleep. Research shows that this helps your zombies (subconscious processes) to process the list overnight, making it easier to work on your tasks the next day.
D.
Pay attention for procrastination cues and remove yourself from environments that contain many distractions and procrastination cues.
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【单选题】SQL语言定义完整性约束条件的功能主要体现在( )。
A.
CREATE TABLE 语句
B.
ALTER TABLE 语句
C.
CREATE TABLE 语句或 ALTER TABLE语句
D.
CREATE TABLE 语句和 ALTER TABLE语句