Question 56

Key_FROm is an acceptable syntax for the FROM keyword in MySQL.

In MySQL, the FROM keyword can be used in a case-insensitive manner, allowing variations in its casing. However, when the keyword is used as part of an identifier or a key, it can take on additional characters, which makes "Key_FROm" a valid syntax.

A) FROm

This option demonstrates a variation in case, which is acceptable in MySQL, as it is case-insensitive for keywords. However, it does not represent the use of an identifier or a key, which is explicitly required by the question.

B) Key_FROm

This option is correct as it includes an identifier or a key prefix along with the FROM keyword. In MySQL, this syntax is acceptable and accurately reflects the requirement set forth in the question.

C) FRO'm'

This option introduces an apostrophe, which is not a valid character in the syntax of the FROM keyword. This makes it incorrect as it does not conform to the expected structure of the MySQL syntax.

D) fro'M'

Similar to Option C, this choice also includes an apostrophe, rendering it invalid. The apostrophe does not belong in the context of the FROM keyword, making this option incorrect.

Conclusion

Key_FROm is the only option that correctly combines the FROM keyword with an acceptable identifier format in MySQL. The other options either misrepresent the case sensitivity or include invalid characters, confirming that they do not meet the requirements of the question. Thus, Key_FROm stands out as the clear and correct choice.