The relational model relies on primary keys to identify entities and on foreign keys to create relationships to preserve the integrity (validity) of the keys. discuss the two rules that ensure the integrity of keys within a database.

Quincy would like to view the contents of a specific message in his inbox. a portion of his computer screen is shown. what should quincy do in order to complete this task? 1. click on the inbox in the navigation pane, and click on the specific message in the folder pane to display its contents. 2. click on the inbox in the outlook today window, and click on the specific message in the folder pane to display its contents. 3. double-click the message’s header in the outlook today window, and right-click on the specific message to display its contents. 4. double-click the mail option in the navigation pane, and right-click on the specific message to display its contents.

Alocal reaction will occur at the site of the exposure such as irritation or damage to the skin eye or local reaction will occur at the site of the exposure such as irritation or damage to the skin ireland lounges

Consider the following declarations (1, 2, 3, 5, 7)class bagtype{public: void set(string, double, double, double, double); void print() const; string getstyle() const; double getprice() const; void get(double, double, double, double); bagtype(); bagtype(string, double, double, double, double); private: string style: double l; double w; double h; double price; }; a.) write the definition of the number function set so that private members are set according to the parametersb.) write the definition of the member function print that prints the values of the data membersc.) write the definition of the default constructor of the class bagtype so that the private member variables are initialized to "", 0.0, 0.0, 0.0, 0.0, respectively d.) write a c++ statement that prints the value of the object newbag. e.) write a c++ statement that declares the object tempbag of type bagtype, and initialize the member variables of tempbag to "backpack", 15, 8, 20 and 49.99, respectively