In a Relational Database, Every Record Must Be Uniquely Identified

question 23

Multiple Choice

In a relational database, every record must be uniquely identified by a _____. ​

• A) primary key
• B) super key
• C) remote key
• D) candidate key

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Definitions:

Secondary Spermatocyte

A cell that arises from the division of a primary spermatocyte and will undergo meiosis II to produce spermatids.

Mature Sperm

The final stage of sperm development, fully equipped for fertilization with a head containing genetic material and a flagellum for mobility.

Luteinizing Hormone

A hormone secreted by the anterior pituitary gland that plays a key role in regulating the menstrual cycle and ovulation in females and testosterone production in males.

Progesterone

A steroid hormone secreted by the ovary (mainly by the corpus luteum) and placenta; stimulates the uterus (to prepare the endometrium for implantation) and breasts (for milk secretion).