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2 years ago

Which of the following is true when representing a 1:1 binary relationship using the relational model

1 answer:

5 0

When a 1:1 binary relationship is represented by using the relational model: C) the key of either entity is placed in the other as a foreign key.

<h3>What is an entity relationship?</h3>

An entity relationship refers to a data model with the highest level of abstraction and it's designed to avail designers an ability to use a graphical tool to examine structures rather than describe them by using text.

In Computer technology, when a 1:1 binary relationship is represented by using the relational model, the true statement is that the key of either entity is usually placed in the other entity as a foreign key.

Read more on entity relationship here: brainly.com/question/14530873

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Complete Question:

Which of the following is true when representing a 1:1 binary relationship using the relational model?

A) The key of the entity with the highest minimum cardinality must be placed in the other entity as a foreign key.

B) The key of each entity must be placed in the other as a foreign key.

C) The key of either entity is placed in the other as a foreign key.

D) The key of the entity with the most attributes must be placed in the other entity as a foreign key.

E) Both entities must have the same primary key.

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So, this forms an arithmetic sequence.

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3 years ago

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2 years ago

How much heat is absorbed when 2.8 mol nh4no3 is dissolved in water? the heat of solution of nh4no3 is 25.4 kj/mol.

Kay [80]

The heat absorbed when 2.8 mol NH₄NO₃ is dissolved in water is 71.96 kJ.

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By the formula of heat

$\rm (n) \times (delta\;Hrxn) = (qrxn)$

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Putting the values in the equation

$\rm qrxn = (2.8 mol) \times(25.7 kJ/mol) = 71.96 kJ$

Thus, the heat absorbed when 2.8 mol NH₄NO₃ is dissolved in water is 71.96 kJ.

Learn more about heat

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2 years ago

Give a situation where you are adopted a holistic view

ivolga24 [154]

Answer:

When looking at the problems in big cities like Metro Manila, I tend to adopt a holistic view to identify the real cause of the issue.

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