[单选]
Examine the structure of the EMPLOYEES table:

You issue these statements:

At the end of this transaction, what is true?（）

A . You have no rows in the table.
B . You have an employee with the name of James.
C . You cannot roll back to the same savepoint more than once.
D . Your last update fails to update any rows because employee ID 180 was already eleted.

简述校园文化的积极功能。 You are maintaining the SALES database of TeleStar Corporation. The online redo log configuration of the database is as follows： One of the redo log members， redo3b， is lost due to disk failure. How will you recover the redo log member redo3b？（） by performing an incomplete recovery from the last backup。 by performing an import operation。 by performing a complete database recovery。 by dropping the lost member and adding a new redo log member。赵先生，45岁。患“冠心病”18年，住院期间突然神志丧失，呼吸不规则，即刻进行心肺复苏。判断心脏按压是否有效的标志是（）测血压。呼喊患者看其是否清醒。触及挠动脉搏动。触及颈动脉搏动。胸部起伏。群体健康行为的传播理论所具有的模式有（）单向传播模式。双向传播模式。互动传播模式。整体互动模式。钻削冷作硬化现象是由（）产生的。

Examine the structure of the EMPLOYEES table:

You issue these statements:

At the end of this transaction, what is true?（）

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[单选] Examine the structure of the EMPLOYEES table: You issue these statements: At the end of this transaction, what is true?（）

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[单选]
Examine the structure of the EMPLOYEES table:

You issue these statements:

At the end of this transaction, what is true?（）