试题五（共15分，每空3分）

阅读下列说明和C++代码，回答下列问题。

【说明】

现欲开发一个软件系统，要求能够同时支持多种不同的数据库，为此采用抽象工厂模式设计该系统。以SQL Server和Access两种数据库以及系统中的数据库表Department为例，其类图如图5所示。

[C++代码]

#include＜iostream＞

using namespace std;

class Department{/*代码省略*/};

class IDepartment{

public:

___（1）___=0;

___（2）___=0;

};

class SqlserverDepartment: ___（3）___{

public:

void Insert(Department* department){

cout＜＜"Insert a record into Department in SQL Server! ";

//其余代码省略

}

Department GetDepartment(int id){

}

};

class AccessDepartment: public IDepartment {

public:

void Insert(Department* department){

cout＜＜"Insert a record into Department in ACCESS! ";

//其余代码省略

}

Department GetDepartment(int id){

/*代码省略*/

}

};

___（5）___{

public:

__（6）____=0;

};

class SqlServerFactory: public IFactory{

public:

IDepartment* CreateDepartment() {return new SqlserverDepartment(); }

};

class AccessFactory:public IFactory{

public:

IDepartment* CreateDepartment() { return new AccessDepartment() ; }

//其余代码省略

};