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- 6. Create a table-valued function named fnDateRange, similar to the stored procedure of exercise 3. The function requires two parameters of data type date. Don’t validate the parameters. Return a result set that includes the InvoiceNumber, InvoiceDate, InvoiceTotal, and Balance for each invoice for which the InvoiceDate is within the date range. Invoke the function from within a SELECT statement to return those invoices with InvoiceDate between October 10 and October 20, 2019.5. Create a scalar-valued function named fnUnpaidInvoiceID that returns the InvoiceID of the earliest invoice with an unpaid balance. Test the function in the following SELECT statement: SELECT VendorName, InvoiceNumber, InvoiceDueDate, InvoiceTotal - CreditTotal - PaymentTotal AS Balance FROM Vendors JOIN Invoices ON Vendors.VendorID = Invoices.VendorID WHERE InvoiceID = dbo.fnUnpaidInvoiceID();calculate_new_balance Given a starting balance (a number), and a list of transaction tuples, calculate the final balance for an account. Transaction tuples are of the shape ("description", amount, "withdrawal") , or ("description", amount, "deposit"). The last entry in the tuple will be either "withdrawal" or "deposit". Every withdrawal decreases the balance of the account by the specified amount, and every deposit increases the balance. The return value is the new account balance, as a number. (which could be negative) Sample calls should look like: >>> calculate_new_balance(100, [("payday", 20, "deposit"), ("new shoes", 50, "withdrawal"), ("illicit winnings", 200, "deposit")])270>>> calculate_new_balance(100, [])100
- Create a function in your own database that takes two parameters: A year parameter A month parameter The function then calculates and returns the total sales of the requested period for each territory. Include the territory id, territory name, and total sales dollar amount in the returned data. Format the total sales as an integer. Hints: a) Use the TotalDue column of the Sales.SalesOrderHeader table in an AdventureWorks database for calculating the total sale. b) The year and month parameters should have the SMALLINT data type.Suppose you have a table with a primary key composed of two columns. When another column in this table is dependent on only one of the two columns in the primary key, this poses a risk for _____. a. update anomalies b. functional dependency c. qualification errors d. function splitting5. calculate_new_balance Given a starting balance (a number), and a list of transaction tuples, calculate the final balance for an account. Transaction tuples are of the shape ("description", amount, "withdrawal") , or ("description", amount, "deposit"). The last entry in the tuple will be either "withdrawal" or "deposit". Every withdrawal decreases the balance of the account by the specified amount, and every deposit increases the balance. The return value is the new account balance, as a number. (which could be negative) Sample calls should look like: >>> calculate_new_balance(100, [("payday", 20, "deposit"), ("new shoes", 50, "withdrawal"), ("illicit winnings", 200, "deposit")]) 270 >>> calculate_new_balance (100, []) 100
- Aggregate functions should be defined.Look at the code below and use the following comments to incdicate the scope of the static variables or functions. Place the comment below the relevant line. Module scope Class scope Function scope The code runs. Use onlinegdb.com to see it run. Module scope means global but only known in this source file. Class scope means global but only known by the class. Function scope means global but only known in the function. Hide Comments 1 #include 2 static const int MAX_SIZE=10; 5 // Return the max value 6 static double max(double d1) 7 { static double lastMax = 0; lastMax = (di > lastMax) ? di : lastMax; return lastMax; 8 10 11 } 12 13 // singleton class only one instance allowed 14 class singleton 15 { public: static Singleton& getsingleton() { return theone; } // Returns the Singleton 16 17 18 19 20 friend std::ostream& operator<< (std::ostream& o, const Singleton& s); private: Singleton() { }; // Prevents more instances 21 22 23 24 25 static Singleton theone; 26 }; 27 Singleton…Input and run the VALID_DEPTID function to see how it works. CREATE OR REPLACE FUNCTION valid_deptID ( p_deptid IN departments. department_id%TYPE) RETURN BOOLEAN IS v_dummy PLS_INTEGER; BEGIN select 1 into v_dummy from departments where department_id = p_deptid; return TRUE; EXCEPTION WHEN NO_DATA_FOUND THEN RETURN FALSE; END valid_deptID;| Describe what the VALID_DEPTID function does.
- Instructions at the top of page for what functions can be used. Answer question 1 only please.Create a structure course with some attributes i.e course_ID, course_title, credit_hrs etc.. Then Implement following 5 functions (Known as CRUDS operations which means CREATE, READ, UPDATE, DELETE, SEARCH operations): 1. addAStudent 2. updateAStudent 3. deleteAStudent 4. searchAndDisplayAStudent 5. displayAllstudents After that, create an array of 5 courses in main function. Create a menu in main function to enable user to select and perform the operations we created above. Program must not exit until and unless user wants to do so. Sample Menu: Main Menu --------------- Press 1 to add a Course Press 2 to update a Course Press 3 to delete a Course Press 4 to search and display a Course Press 5 to display all Courses Press e to exit the program... Do this program in c++ language.Create a structure course with some attributes i.e course_ID, course_title, credit_hrs etc.. Then Implement following 5 functions (Known as CRUDS operations which means CREATE, READ, UPDATE, DELETE, SEARCH operations): 1. addAStudent 2. updateAStudent 3. deleteAStudent 4. searchAndDisplayAStudent 5. displayAllstudents After that, create an array of 5 courses in main function. Create a menu in main function to enable user to select and perform the operations we created above. Program must not exit until and unless user wants to do so. Result: Sample Menu: Main Menu --------------- Press 1 to add a Course Press 2 to update a Course Press 3 to delete a Course Press 4 to search and display a Course Press 5 to display all Courses Press e to exit the program Write this programme in c++