A Company Makes Four Kinds of Products Find Which of the Three Codes Is a Primary Key

question 14

Short Answer

A company makes four kinds of products. Each product has a size code, a weight code, and a shape code. The following table shows these codes: $$\begin{array} { l c c c } & \text { Size Code } & \text { Weight Code } & \text { Shape Code } \\\# 1 & 42 & 27 & 42 \\\# 2 & 27 & 38 & 13 \\\# 3 & 13 & 12 & 27 \\\# 4 & 42 & 38 & 38\end{array}$$ Find which of the three codes is a primary key. If none of the three codes is a primary key, explain why.

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Definitions:

Mitotic Division

A type of cell division in eukaryotic cells where a single cell divides to produce two genetically identical daughter cells.

Mitosis

A type of cell division in eukaryotic cells that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus.

Telomerase

An enzyme that adds nucleotide sequences to the ends of chromosomes, thereby preventing their shortening during cell division.

Malignant Cells

Abnormal cells that divide uncontrollably and have the potential to invade other tissues, leading to cancer.