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Answer:</h2>
Use case diagram
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Explanation:</h2>
A use case diagram is one of the dynamic diagrams used in Unified Modelling Language (UML). It is used to illustrate the set of actions, services, tasks and functions that a system needs to perform and those to be performed on the system. Use case diagrams help team members of a project to identify the main functions or features of the system as well as users and external systems that will interact with the system.
Use case diagrams have the following features;
(i) System: to depict the application itself. It is represented using a rectangular box.
(ii) Use case: to represent the system's functionalities. It is represented using an oval shape.
(iii) Actors: to represent the users of the system.
(iv) Relationships: to illustrate the relations between the actors and the use case of the system.
Answer:
2(101101) - 2(1100) = 200002
Explanation:
the text is everywhere don't know what to answer
Answer:
There are two customers in the PostalCode.
SQL statement for select all the fields and the rows from the Customers table where PostalCode is 44000.
SELECT * FROM Customers WHERE PostalCode = "44000";
Explanation:
The SELECT statement retrieve zero or more than one row from 1 or more than one the database tables or the database views.
In most of the applications, the SELECT query is most commonly used for DQL(Data Query Language) command.
SQL is the declarative programming language and the SELECT statement specifies the result set, but they do not specifies how to calculate it.
The issue arises because the string you are trying to print is not a string, rather a float value. Item1, item2 and item3 are strong values (if you type some alphabets in it and not just numbers), but itemonecost, itemtwocost, and itemthreecost are explicitly type casted to float. In line 22, 23, and 24 you’re trying to print a float, by adding it with the string. One cannot add numbers to string. Rather you can type cast the itemcost to string while printing.
Add str(itemonecost) instead of itemonecost in print statement. Do this for other float variables too.
However do note that there are multiple ways to correct this issue, and I’ve just pointed one out.
