The column attribute provides unique numbers for identification is . . . . . . . .
A. AUTO_INCREMENT
B. UNSIGNED
C. IDENTIFY
D. DESCRIBE
Answer: Option A
Solution (By Examveda Team)
This question asks about a column attribute in MySQL that helps assign unique numbers for identification. Let's break down the options:Option A: AUTO_INCREMENT: This is the correct answer! AUTO_INCREMENT automatically generates a unique number for each new row added to the table. It starts with a specific value and increases by one for each new entry.
Option B: UNSIGNED: This attribute specifies that a column can only hold positive numbers (no negative values). While it helps with data consistency, it doesn't directly provide unique identification numbers.
Option C: IDENTIFY: MySQL doesn't have an attribute called "IDENTIFY."
Option D: DESCRIBE: DESCRIBE is a command used to get information about a table's structure, not a column attribute itself.
Therefore, the answer is Option A: AUTO_INCREMENT. It's the attribute responsible for generating unique numbers for identification in MySQL tables.
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A. SQL
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C. A programming language like C++
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Which type of database management system is MySQL?
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