SQLite database in Android application

Hi,

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;

public class TodoDatabaseHelper extends SQLiteOpenHelper {
private static final String DATABASE_NAME = "applicationdata";

private static final int DATABASE_VERSION = 1;

// Database creation sql statement
private static final String DATABASE_CREATE = "create table todo (_id integer primary key autoincrement, "
+ "category text not null, summary text not null, description text not null);";

public TodoDatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}

// Method is called during creation of the database
@Override
public void onCreate(SQLiteDatabase database) {
database.execSQL(DATABASE_CREATE);
}

// Method is called during an upgrade of the database, e.g. if you increase
// the database version
@Override
public void onUpgrade(SQLiteDatabase database, int oldVersion,
int newVersion) {
Log.w(TodoDatabaseHelper.class.getName(),
"Upgrading database from version " + oldVersion + " to "
+ newVersion + ", which will destroy all old data");
database.execSQL("DROP TABLE IF EXISTS todo");
onCreate(database);
}
}