What is the difference between a Dynaset and Snapshot and
how would you create one?
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Answer Posted / suresh
A dynaset-type Recordset object is a dynamic set of records
that can contain fields from one or more tables or queries
in a database and may be updatable. In an ODBCDirect
database, a dynaset-type Recordset object corresponds to an
ODBC keyset cursor.
Remarks
A dynaset-type Recordset object is a type of Recordset
object you can use to manipulate data in an underlying
database table or tables.
It differs from a snapshot-type Recordset object because
the dynaset stores only the primary key for each record,
instead of actual data. As a result, a dynaset is updated
with changes made to the source data, while the snapshot is
not. Like the table-type Recordset object, a dynaset
retrieves the full record only when it's needed for editing
or display purposes.
A snapshot-type Recordset object is a static set of records
that you can use to examine data in an underlying table or
tables. In an ODBCDirect database, a snapshot-type
Recordset object corresponds to a static cursor.
Remarks
To create a snapshot-type Recordset object, use the
OpenRecordset method on an open database, on another
dynaset- or snapshot-type Recordset object, or on a
QueryDef object.
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