RAD Studio VCL Reference
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property UniDirectional: Boolean;
__property Boolean UniDirectional;
Set UniDirectional to control whether or not a BDE cursor can move forward and backward through a result set. By default UniDirectional is false, enabling forward and backward navigation.
Traditionally SQL cursors are unidirectional. They can travel only forward through a dataset. The BDE, however, permits bidirectional travel by caching records. If an application does not need bidirectional access to records in a result set, set UniDirectional to true. When UniDirectional is true, an application requires less memory and performance is improved.
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