Which Accessor Should I Use?

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There are four main types of accessors in the consumer templates. Each accessor has its own advantages and disadvantages. Depending upon your situation one accessor type should suit your needs.

CAccessor

Binding Parameters Comments
Create a user record with COLUMN_ENTRY macros. The macros bind a data member in that record to the accessor. Once the rowset is created, columns cannot be unbound. Yes, by using a PARAM_MAP macro entry.
Once bound, parameters cannot be unbound.		 Fastest accessor because of small amount of code.

CDynamicAccessor

Binding Parameters Comments
Automatic. No. Useful if you do not know the type of data in a rowset.

CDynamicParameterAccessor

Binding Parameters Comments
Automatic, but can be overridden. Yes, if the provider supports ICommandWithParameters. Parameters bound automatically. Slower than CDynamicAccessor but useful for calling generic stored procedures.

CManualAccessor

Binding Parameters Comments
Manual using AddBindEntry Manually using AddParameterEntry. Very fast since parameters and columns are bound only once. You determine the type of data you want to deal with. (See the sample as an example.) Requires more code than CDynamicAccessor or CAccessor. Code tends to be more like calling OLE DB directly.