Answer:
class Db_test(models.Model):
name = models.CharField(max_length=50)
comment = models.CharField(max_length=200)
created = models.DateField(auto_now_add=True)
modified = models.DateField(auto_now=True)
class Meta:
db_table = "db_test"
Explanation:
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Answer:
Let's take an example of the embedded system, which is a perfect example of this question as a computer system. Suppose we want the embedded system to record the details related to soil of agricultural land. We will take an IoT device which will be a sensor that can register soil properties, and get connected to the computer system through the internet. And we design an embedded system that registers these values and then copy them like somewhere in DB space on Amazon cloud or Google cloud. And finally display on some LCD or a big projector, or whatever, and like we design. Thus we have designed, and now when we install this on agriculture land, we implement it, and since check regular for correct performance, we maintain this embedded or a mini-computer system as well. This is what design, implement and maintain computer systems mean.
Explanation:
Please check the answer section.
I think the correct answer from the choices listed above is option D. It would be plate tectonics that is powered by energy from Earth's interior since it is the only choice that is underneath the surface of the Earth. Hope this answers the question. Have a nice day.
