ltUnspecified A specific lock type has not been specified or determined. ltReadOnly Read-only; the current execution cannot modify data. ltPessimistic Pessimistic locks; locks instantiated on a record-by-record basis when edit mode is applied to a record. ltOptimistic Optimistic locks; locked are initiated on a record-by-record basis, but only when updates are applied and a record is being updated. ltBatchOptimistic Optimistic batch updates; used for batch update mode rather than immediate update mode.
ltReadOnly Read-only; the current execution cannot modify data.
ltPessimistic Pessimistic locks; locks instantiated on a record-by-record basis when edit mode is applied to a record.
ltOptimistic Optimistic locks; locked are initiated on a record-by-record basis, but only when updates are applied and a record is being updated.
ltBatchOptimistic Optimistic batch updates; used for batch update mode rather than immediate update mode.