Started added Exception handling to DbHelpers
Started added Exception handling to DbHelpers

rfcx/rfcx-guardian-android,rfcx/rfcx-guardian-android,rfcx/rfcx-guardian-android,rfcx/rfcx-guardian-android,rfcx/rfcx-guardian-android,rfcx/rfcx-guardian-android,rfcx/rfcx-guardian-android,rfcx/rfcx-guardian-android,rfcx/rfcx-guardian-android