DRAWBACK OF
TUPLE VERSIONING
Whenever one attribute value is changed, a whole new
tuple version is created, even though all the other attribute values will be
identical to the previous tuple version.
ATTRIBUTE VERSIONING.
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Database systems that support complex structured objects, such as object databases or object-relational systems .This approach
is called attribute versioning.
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Each attribute that changes over time is
called a time-varying attribute.
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Attributes that do not change are called
non-time-varying and are not associated
with the temporal periods.
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The temporal periods may represent valid
time, transaction time, or Bitemporal, depending on the application
requirements.
