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- Q You develop a contact management application that will enable users to retrieve information from a central database. After the data is returned to your application, users must be able to view it, edit it, add new records, and delete existing records. All user changes must then be saved in the database. Your application design requires several ADO.NET object to work together to accomplish these requirements. You use classes from the System.Data and System.Data.OleDb namespaces. First you write the code to connect to the database. Which four actions should you take next? (Each correct answer presents part of the solution. Choose four) A. Create an OleDbDataAdapter object and define the SelectCommand property. B. Create an OleDbCommand object and use the ExecuteScalar method. C. Create a DataTable object as container for the data. D. Create a DataSet object as a container for the data. E. Call the DataAdapter.Fill method to populate the DataSet object. F. Call the DataAdapter.Update method to populate the DataSet object. G. Call the DataAdapter.Update method to save changes to the database. H. Call the DataSet.AcceptChanges method to save changes to the database.
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Question
A machine operator severs their hand below the wrist. The bleeding from the stump has been controlled and the hand is retrievable. You should?
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Answers
Place the amputated hand in an airtight plastic bag and keep afloat in icy cold water. Arrange for an ambulance to take the patient and amputated hand to hospital.
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class fig2d{
int dim1, dim2;
public:
fig2d() { dim1=5; dim2=6;}
virtual void operator<<(ostream & rhs);
};
void fig2d::operator<<(ostream &rhs){
rhs <dim1<<" "<dim2<<" ";
}
class fig3d : public fig2d{
int dim3;
public:
fig3d() { dim3=7;}
virtual void operator<<(ostream &rhs);
};
void fig3d::operator<<(ostream &rhs){
fig2d::operator <<(rhs);
rhs<dim3;
}
void main(){
fig2d obj1;
fig3d obj2;
obj1 << cout;
obj2 << cout;
}
}
class fig3d : public fig2d{
int dim3;
public:
fig3d() { dim3=7;}
virtual void operator<<(ostream &rhs);
};
void fig3d::operator<<(ostream &rhs){
fig2d::operator <<(rhs);
rhs<
}
void main(){
fig2d obj1;
fig3d obj2;
obj1 << cout;
obj2 << cout;
}
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