which occassion is reflected through the snapshots
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Answer:
The SnapshotID represents the snapshot from which this dynaset was created. It can be thought of as a timestamp. It can be passed into other CreateDynaset method calls to cause them to be created using data from the same point in time as the original dynaset.
The Snapshot property can be set with the value of another Snapshot. That new snapshot is used during the next Refresh operation when the query is reexecuted. The Snapshot property always returns the SnapshotID on which this OraDynaset object was based, not any other SnapshotID set through the snapshot property.
The SnapshotID becomes invalid after a certain amount of time; that amount of time is dependent on the amount of activity and the configuration of the database. When this happens, you get a Snapshot too old error message. For more information about snapshots, see the Oracle Database Concepts.
This SnapshotID represents the point in time when this dynaset was created. Changes to this dynaset (Edit, Delete, and AddNew operations) is not reflected in additional dynasets created using this SnapshotID because they occurred after that point in time.
SnapshotID objects are only meaningful for SELECT statements where the tables referenced are real database tables, as opposed to pseudo tables such as DUAL.
One valuable use of the SnapshotID is to calculate the number of rows in a table without using the RecordCount property which causes every row to be fetched.
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