Object DBMSs allow you to store objects directly without any mapping to different
data structures. Relational DBMSs require mapping from objects to tables. This
mapping to different
data structures is called "impedance mismatch." The figure below shows
direct storage at the left and impedance mismatch at the right.
This lack of impedance mismatch in Object DBMSs gives them a performance
advantage over Relational DBMSs,
especially on complex data. Impedance mismatch
slows down performance on complex data because of processing needed map from one data
structure (tables) to another (objects). For more information see impedance
mismatch (new window). Also see complex
data (new window).
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based on 7 reviews.
based on 5 reviews.
based on 7 reviews.
