Solution :
Here, we need to perform JOIN operation of the students and registration.
Use NATURAL JOIN operator 
and so no need to specify Join condition.
Also we need to selection operator tp select only those course whose major in "philosophy".
Finally we projection operator π to project only distinct students name who took at least three courses.
![$\pi [\sigma_{\text{student's nam}e} [ \sigma(\text{three courses}) \Join \text{"Philosophy"}]]$](https://tex.z-dn.net/?f=%24%5Cpi%20%5B%5Csigma_%7B%5Ctext%7Bstudent%27s%20nam%7De%7D%20%5B%20%5Csigma%28%5Ctext%7Bthree%20courses%7D%29%20%5CJoin%20%5Ctext%7B%22Philosophy%22%7D%5D%5D%24)
Answer and Explanation:
There are two primary issues.
The principal issues is Security of data or information.
The information must be overseen such that it is upheld up regularly and kept secure from any catastrophic event or outer hacking.
Second, when planning a framework to oversee information, we have to make it versatile and adaptable.
The data should be scalable , i.e., the component used to store the information must be effectively ready to develop as we collect more information or the sort of information contribution to the framework needs to change after some time.
A situation which modular design would be least beneficial for a game program is: A. the program is extremely simple.
<h3>What is
modular design?</h3>
Modular design can be defined as a software development technique that involves the separation of the overall functionality of a software into independent and interchangeable software sections or modules.
Also, modular design can be used to break a large code in a software into smaller blocks holding specific functions.
In this context, we can infer that modular design would be least beneficial for a game program when the software program is extremely simple.
Read more on modular design here: brainly.com/question/14192464
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Answer:
1. =SUM(C15: G15) 2. The first part of second part is =SUM(C11:G11), =SUM(C12:G12), =SUM(C13:G13), =SUM(C14:G14), =SUM(C15:G15). Last is total revenue and the first four are seating for various classes and the second part of the second question is =SUM(H11: H14) which is the grand total of seats.
Explanation:
Suppose from C15 to G15, we have five columns and hence five days. So we can have one column for one day, and add there, number of seats. C15: G15 is daily revenue, and C11: G11 ...... C14: G14 is the number of seats each day, and in each class, and thus the above answer. We can have different assumptions, and formula will change according to assumptions. You can use HLOOKUP as well if you want.
Answer:
→A desktop computer is designed mainly as a single user computer to solve the tasks of the end user.
→ A laptop is a personal computer with a touchpad used to move a cursor on the screen.
Explanation:
