// write a delta
ru = of.getRecordUpdater(root, options.writingBase(false)
.minimumTransactionId(200).maximumTransactionId(200).recordIdColumn(1));
ru.update(200, new MyRow("update 1", 0, 0, BUCKET));
ru.update(200, new MyRow("update 2", 2, 0, BUCKET));
ru.update(200, new MyRow("update 3", 3, 0, BUCKET));
ru.delete(200, new MyRow("", 7, 0, BUCKET));
ru.delete(200, new MyRow("", 8, 0, BUCKET));
ru.close(false);
ValidTxnList txnList = new ValidTxnListImpl("200:");