Which column attribute provides unique numbers for identification?(a) AUTO_INCREMENT(b) UNSIGNED(c) IDENTIFY(d) DESCRIBEI got this question in exam.I'd like to ask this question from Working with Sequences in chapter Data Types of MySQL

Which column attribute provides unique numbers for identification?(a)

1.	Which column attribute provides unique numbers for identification?(a) AUTO_INCREMENT(b) UNSIGNED(c) IDENTIFY(d) DESCRIBEI got this question in exam.I'd like to ask this question from Working with Sequences in chapter Data Types of MySQL
Answer» CORRECT answer is (a) AUTO_INCREMENT To explain: In MySQL, the mechanism for PROVIDING unique NUMBERS is through the AUTO_INCREMENT column ATTRIBUTE. It enables the generation of sequential numbers AUTOMATICALLY. This facilitates identification.

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