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Bess [88]
3 years ago
10

Using the notation exemplified in following question , list a set of tables and attributes (and identify keys) to represent the

following data:
In a very simple school database, students have a student ID and a name. Each student has only one advisor (who has an ID and a name). Each advisor advises many students. Students take many courses. Each course has an ID, a name, and the number of credits. The database also stores when a student took a course (the semester/year) and his/her final grade for that course (on that semester).

Computers and Technology
1 answer:
Paha777 [63]3 years ago
6 0

Answer:

Entities are - Students, CourseList, Advisor and CourseSelection.

Explanation:

The database is structure is designed using Crow Foot Database Notation as attached

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A company with a large number of hosts creates three subdomains under a main domain. For easier management of the host records,
REY [17]

Answer:

4

Explanation:

For easier management of the host records of the company 4 zones should be used because

subdomain is part of a larger domain and the main domain which is the primary domain is the name which the company have decide to use which will represent the company website address and in a situation where the company

have different domain names in which they had registered, they will need to choose one among the domain which will inturn be their main domain.

Therefore for easier , efficient and effective management of the host records 4 zones will be the best zones to be used.

Example of sub domain is north.example.com

4 0
3 years ago
Do you think privacy policies are effective in social networking sites?
Kamila [148]

Answer:

When that information gets posted online, it is no longer private, and may end up falling into wrong hands. Even if you have put in place the highest possible security measures, some of your friends, colleagues and companies you interact with on social media, can end up leaking your personal information.

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3 years ago
A(n) ____________________ is a hardware device or software utility designed to intercept and prevent unauthorized access to a co
sesenic [268]

Answer:

hardware device

Explanation:

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3 years ago
Alright, so I have a wireless mouse that uses a dongle (it's not Bluetooth nor wired). But recently I realized that none of the
serg [7]

Answer:Mouse is not working because you haven't changed your battery for months.

Remember that, most of wireless mouses use AA 1.5V battery for it's power on. If you've let your computer and mouse set on, then the battery can only run around 5-6 months. If you turn off your mouse everytime you're not using then the battery life might get longer. So, all you have to do is buy new batteries and replace it. Follow steps of replacing battery in this video.

(Consider buying dry battery for using longer)

No.2: Loose battery in the tray

This is quite common as well. We understand that the mouse made materials can have its own changing. Sometimes, you might drop your mouse, then after that, the loosen battery just happening around. A loosen battery might get your wireless mouse not working well. It works then stop at the middle. Follow the easy steps to fix this state of mouse is not working.

No. 3: Bad Pairing.

Due to some reasons, bad pairing can happen and get your mouse stuck on laptop screen. Bad pairing might be from overworking or overloading tasks on your PC. Easy quick fix for bad pairing is disconnect your USB receiver for a while and re-plug in later on.

No.4: On/Off Switch or Power button on the mouse just drop or loosen in

Many people might have problems with their mouse on/off switch button. Don't worry, this can be fixed as well. You can open the mouse (just look under the battery, there is a single screw). Open the mouse from this screw, and disassembly it carefully. You can see the on/off switch is just around the corner. Now, you can, reattach the button and close the mouse correctly.

No. 5 : Buy a new mouse

I've suggested a way to search for a new wireless mouse with USB Unifying Receiver. For a wireless mouse that allows Unifiying receiver, then you don't worry when your current usb receiver get lost (because, you can always buy a new usb receiver).

Explanation:

6 0
3 years ago
Is the adoption rate of communication technology increasing ?
Neko [114]
More people adopt the technology during any period, leading to an increasing rate of adoption. So, yes
3 0
3 years ago
Read 2 more answers
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