About the Author. Alan Beaulieu has been designing, building, and implementing custom database applications for over 15 years. He specializes in designing Oracle databases and supporting services in the fields of financial services and telecommunications. He is also an expert with the SQL language and specializes in report design and implementation across multiple database servers. Alan has a bachelor of science degree in operations research from the Cornell University School of Engineering. He lives in Massachusetts with his wife and two daughters and can be reached at firstname.lastname@example.org.
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The animal on the cover of Learning SQL is an Andean marsupial tree frog (Gastrotheca riobambae). As its name suggests, this crepuscular and nocturnal frog is native to the western slopes of the Andes mountains and is widely distributed from the Riobamba basin to Ibarra in the north.
During courtship, the male calls (“wraaack-ack-ack”) to attract a female. If a gravid female is attracted to him, he climbs onto her back and performs a common frog mating hold called the nuptial amplexus. As the eggs emerge from the female’s cloaca, the male catches the eggs with his feet and fertilizes them while maneuvering them into a pouch on the female’s ...