Marks the beginning of an accessor entry.
BEGIN_ACCESSOR(num, bAuto )
[in] The zero-offset number for the accessor in this accessor map.
[in] Specifies if this accessor is an auto accessor or a manual accessor. If true, the accessor is auto; if false, the accessor is manual. An auto accessor means data is fetched for you on move operations.
In the case of multiple accessors on a rowset, you need to specify BEGIN_ACCESSOR_MAP and use the BEGIN_ACCESSOR macro for each individual accessor. The BEGIN_ACCESSOR macro is completed with the END_ACCESSOR macro. The BEGIN_ACCESSOR_MAP macro is completed with the END_ACCESSOR_MAP macro.