Impedance mismatch - Northumbria University

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Transcript Impedance mismatch - Northumbria University

Impedance mismatch
• Impedance mismatch is a problem in electrical engineering
that occurs when two transmission lines or circuits with
different impedances are connected. This can cause signal
reflection resulting in noise.
• In programming terminology it refers to the attempt to
connect two systems that have very different conceptual
bases, most commonly when trying to use a SQL database
from an object oriented program. Christopher J. Date
would argue that a truly relational DBMS would pose no
such problem, as domains and classes are essentially one
and the same thing.