public class SplashActivity extends Activity{ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.shan); new Handler().postDelayed(new Runnable() { @Override public void run() { I
使用Flashback Query的场景包括如下: 摘自官档 Recovering lost data or undoing incorrect, committed changes. For example, if you mistakenly delete or update rows, and then commit them, you can immediately undo the mistake. Comparing current data with the correspondi