What factors are required to get involved in a letter of apology?(道歉信中必须包括哪些因素)
A.
Making sincere apology (真诚致歉)
B.
Making corresponding compensation (相应补偿)
C.
Passing the buck (推诿责任)
D.
Making reasonable excuse (合理解释)
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举一反三
【单选题】You have a table named Student that contains 100 rows. Some of the rows have a NULL value in the FirstName column.You execute the following statement: DELETE FROM Student What Is the result?
A.
All rows in the table will be deleted.;
B.
All rows containing a NULL value in the FirstName column will be deleted.;
C.
You will receive an error message.;
D.
All rows and the table definition will be deleted.
【单选题】You execute a statement inside a transaction to delete 100 rows from a table. The transaction fails after only 40 rows are deleted. What is the result in the database?
【单选题】You delete rows in a table named Order. The corresponding rows in the OrderItem table are automatically deleted. This process is an example of a/an: