How to deal with "No Such Table Exception"

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http://stackoverflow.com – In my android activity, I am trying to retrieve data from my existing database. I copied the DB in assets and tried to access it but it is showing error an that no such table exists while compiling the table columns. I tried some tutorials also but none of them worked. What should I do? Below is the code which is causing problem. DataBase Adapter class: public static final String DATABASE_NAME="Wetrip"; public static final String DATABASE_TABLE="tour"; public static final int DATABASE_VERSION=1; public final String TAG = "DBAdapter"; public static final String KEY_ID = "_id"; public stati (HowTos)