database-update

I am developing the second version of my application. In which I am facing a problem. In my application the database is in the assets folder. Now I want to update my database from the assets folder in the second version. I tried the code to upgrade as : // Data Base Version. private static final int DATABASE_VERSION = 2; I changed the version from 1 to 2. //Constructor public DataBaseHelperClass(Context myContext) { super(myContext, DATABASE_NAME, null ,DATABASE_VERSION); this.context = myContext; //The Android's default system path of your application database. DB_PATH = "/data/data/com

I've searched for previous versions of this question, but none seem to fit my case. I have an existing Cassandra cluster running 2.0.x. I've been allocated new VMs, so I do NOT want to upgrade my existing Cassandra nodes - rather I want to migrate to a) new VMs and b) a more current version of Cassandra. I know for in-place upgrades, I would upgrade to the latest 2.0.x, then to the latest 2.1.x. AFAIK, there's no SSTable inconsistency here. If I go this route via addition of new nodes, I assume I would follow the datastax instructions for adding new nodes/decommissioning old nodes? Given the

In the tutorials I am following and a lot of more places I see this, onUpgrade -> drop table if exists, then recreate table. What is the purpose of this? private static class DbHelper extends SQLiteOpenHelper{ public DbHelper(Context context) { super(context, DATABASE_NAME, null, DATABASE_VERSION); } @Override public void onCreate(SQLiteDatabase db) { db.execSQL("CREATE TABLE " + DATABASE_TABLE + " (" + KEY_ROWID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + KEY_NAME + " TEXT NOT NULL, " + KEY_HOTNESS + " TEXT NOT NULL);" ); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int