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Papessa [141]
3 years ago
10

__________________ ensures that each row is uniquely identified by the primary key, which means that a proper search for an exis

ting tuple (row) will always be successful. a. System integrity b. Referential integrity c. Entity integrity d. Database integrity
Computers and Technology
1 answer:
klemol [59]3 years ago
4 0

Solution:

Database integrity ensures that each row is uniquely identified by the primary key, which means that a proper search for an existing tuple (row) will always be successful.

Thus the required answer is D

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One example of how psychological research can be used to control harmful behavior would be __________. A. fooling individuals th
Sati [7]

The results of a psychological research can be used for malignant purposes, such as fooling individuals through their emotions, using propaganda to change beliefs, and manipulating others through the media.

But it can also be used for good – which is what the question is asking. It is clear that from the available options, only (D) improving communication and relationships are an example of how psychological research is used for good.

8 0
3 years ago
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Consider the graph of the function f(x) = 2(x + 3)2 + 2. Over which interval is the graph decreasing? (–∞, –3) (–∞, 2) (–3, ∞) (
Vaselesa [24]

Answer:

The interval over which the graph is decreasing is;

(-∞, -3)

Explanation:

The given function is f(x) = 2·(x + 3)² + 2

By expanding the function, we have;

2·x² + 12·x + 20

From the characteristics of a quadratic equation, we have;

The shape of a quadratic equation = A parabola

The coefficient of x² = +2 (positive), therefore the parabola opens up

The parabola has a minimum point

Points to the left of the minimum point are decreasing

The minimum point is obtained as the x-coordinate value when f'(x) = 0

∴ f'(x) = d(2·x² + 12·x + 20)/dx = 4·x + 12

At the minimum point,  f'(x) = 4·x + 12 = 0

∴ x = -12/4 = -3

Therefore;

The graph is decreasing over the interval from -infinity (-∞) to -3 which is (-∞, -3)

Please find attached the graph of the function created with Microsoft Excel

The graph is decreasing over the interval (-∞, -3).

6 0
2 years ago
Read 2 more answers
I just want to say thanlouy for all the branlies on this app
Gnom [1K]

Answer:

that's just what we do :D

Explanation: because we're awesome UvU

7 0
2 years ago
At the beginning of a project, what should be the focus?
podryga [215]
The answer is A I think
7 0
3 years ago
Understanding that protection of sensitive unclassified information is:
AfilCa [17]

Answer:

Not necessarily malignant

Explanation:

As the word "unclassified" shows it's not damaging, however I still doesn't recommend if it's not necessary.

4 0
2 years ago
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