SQL in a Nutshell

Colophon

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The animal on the cover of SQL in a Nutshell is a chameleon. There are approximately 85 species of chameleons existing in the world today. They are mostly indigenous to Africa, although there are a few species found in Asia and in Europe. Most are tree dwellers. The chameleon is relatively small; the average adult size is between 6 inches and 12 inches. It lives mostly on insects, and uses its long tongue to capture its prey. Indeed, the tongue is a critical tool. It can stretch up to 1.5 times the lizard’s body length, and there is an adhesive pad on the end, which the insects are trapped on. There are several other characteristics common to all species of chameleons. For example, its eyes are large and protruding, and the lizard can see 360 degrees around without moving its head or body. Its toes are on either side of its feet, usually with three on one side and two on the other. This is ideal for moving quickly and efficiently through tree branches.

Chameleons are best known for their ability to change their appearance to adapt to their physical environment. Actually, several types of reptiles can change their skin color, but the chameleon is far and away the most accomplished. This skill, which is moderated by the nervous system, ...