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What Is OOP Persistence,and How Is It Indicated in UML-Style

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What is OOP persistence,and how is it indicated in UML-style E-R diagrams?


Definitions:

Plasmodesma

Cell junction that forms an open channel between the cytoplasm of adjacent plant cells.

Adhering Junction

Cell junction that fastens an animal cell to another cell, or to basement membrane. Connects to cytoskeletal elements inside the cell; composed of adhesion proteins.

Transport Proteins

Proteins involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane.

Membrane

A biological barrier that controls the passage of substances in and out of cells and organelles.

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