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cricket20 [7]
3 years ago
11

Explain the levels of data model​

Computers and Technology
1 answer:
gregori [183]3 years ago
4 0

Answer:

Data modeling occurs at three levels—physical, logical, and conceptual.

  • A physical model is a schema or framework for how data is physically stored in a database.

  • A conceptual model identifies the high-level, user view of data.

  • A logical data model sits between the physical and conceptual levels and allows for the logical representation of data to be separate from its physical storage.

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You have a web application hosted in AWS cloud where the application logs are sent to Amazon CloudWatch. Lately, the web applica
zhenek [66]

Answer/Explanation:

In this scenario, you can:

- look at the existing CloudWatch logs for keywords related to the application error to create a custom metric;

- create a CloudWatch alarm for that custom metric which invokes an action to restart the EC2 instance;

- create alarms that automatically stop, terminate, reboot, or recover your EC2 instances using Amazon CloudWatch alarm actions;

- use the stop or terminate actions to help you save money when you no longer need an instance to be running; and

- use the reboot and recover actions to automatically reboot those instances or recover them onto new hardware if a system impairment occurs.

Cheers

8 0
3 years ago
Choose the output result of the below code.
SIZIF [17.4K]

Answer:

B

Explanation:

When you initialize an instance of FunEvent(tags, year) and assign it to bc. The instance variables in this case are: self.tags = ["g", "ml"] and self.year = 2022. But then you alter tags, which will also change self.tags, since self.tags is a reference to the list you passed in as an argument. This is not the case when you do year=2023 because, first of all, integers are not mutable, and also because even if somehow integers were mutable, you're not changing the object in-place, you're simply changing the where the "variable" is pointing to. So for example if you did tags = ["g", "ml", "bc"] instead of tags.append("bc"), it would also not change the value of the instance variable "tags", because you wouldn't be changing the object in-place. So when you print(bc), the instance variables will be ["g", "ml", "bc"] and 2022. When you try to print an object, it call try to convert it into a string using the __str__  magic method. In this case it will return a string formatted as "Event(tags={self.tags}, year={self.year}) which will output "Event(tags=['g', 'ml', 'bc'], year=2022)" So the correct answer is B

4 0
3 years ago
Plz help me I will mark as the brainlest I only need long answer plz help me ​
xxTIMURxx [149]

Strategy 1

*Testing for timing, high reliability and performance.

Reasons.

Every device and system configuration must be tested including the software setup,definitions and rules must be tested with an attempt to force the system and its intergrals to fail. Every failure(if there are any) must be evaluated and errors corrected.

Strategy 2

*Measuring response levels at the lowest set point of the alarm.

Reasons.

This is to check the trigger points of the alarms in the system and the response must be recorded as well as changing the intervals of alarm triggers so as to evaluate the time taken for the alarm to respond at the lowest point of it to be triggered.

7 0
3 years ago
Question 11
STatiana [176]

What type of program would have a class named Student with objects called fullTime and partTime?

A. machine language program

B. object-oriented program

C. markup language program

D. procedural language program

Answer:

B. object-oriented program

Explanation:

An object-oriented program or OOP is a type of program that uses the concepts of objects and methods.

Although they are quite broad, they also make use of classes and types.

Java, for instance makes use of OOP as they use classes and objects under those classes and name them anyhow they want.

Therefore, the correct answer is B

8 0
4 years ago
you are researching the Holocaust for a school paper and have located several Web sites for information. In a paragraph of no le
jeka94
1. .com .org .edu those have a big part because .com is profit and .org is non profit. 
2. It shows who wrote it 
3. It shows a bio of who wrote it (So you know their actually qualified) 
4. And it has sources to back up for what they say.
7 0
4 years ago
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