What is the minimum value stored by signed TINYINT?

This question is about understanding how MySQL stores numbers.

TINYINT is a data type in MySQL that represents small integers.

Signed means that the number can be positive or negative.

A TINYINT takes up 1 byte of storage space. Since it's signed, one bit is used for the sign, leaving 7 bits for the value.

With 7 bits, you can represent 2⁷ = 128 different values.

Since it's signed, you have half positive and half negative values, plus zero.

So, the minimum value you can store in a signed TINYINT is -128.

Therefore, the correct answer is Option B: -128.