Compound key

(Or “multi-part key”, “concatenated key”) A key which consists of more than one attribute of the body of information (e.g. database “record”) it identifies.

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  • Compound-leaf

    noun 1. a leaf composed of a number of leaflets on a common stalk, arranged either palmately, as the fingers of a hand, or pinnately, as the leaflets of a fern; the leaflets themselves may be compound. noun 1. a leaf consisting of two or more leaflets borne on the same leafstalk compound leaf A […]

  • Compound-lens

    noun 1. an optical system consisting of two or more lenses having the same axis. noun 1. a lens consisting of more than one component lens compound lens See lens.

  • Compound-magnet

    noun 1. a magnet consisting of two or more separate magnets placed together with like poles pointing in the same direction.

  • Compound-microscope

    noun 1. an optical instrument for forming magnified images of small objects, consisting of an objective lens with a very short focal length and an eyepiece with a longer focal length, both lenses mounted in the same tube. noun 1. an instrument for magnifying small objects, consisting of a lens of short focal length for […]

  • Compound myopic astigmatism

    compound myopic astigmatism n. Astigmatism in which all meridians are myopic to different degrees.

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