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Which cardinality best describes relationship runs where all team has drag experiment to runs?
- a)1 : 1
- b)1: N
- c)N: M
- d)M :1
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Which cardinality best describes relationship runs where all team has ...
From the above cardinalities, we see that ratios like 1:1, 1:N, N:1 and N:M gives cardinality constraint or numeric restriction on possible relationships. From this, we see that the ratio 1:N relation is most comfortable to describe the constant of ER team.
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Which cardinality best describes relationship runs where all team has ...
1. Introduction:
In this question, we are given a scenario where there are multiple teams participating in a series of drag experiments. We need to determine the cardinality that best describes the relationship between the teams and the drag experiments.
2. Cardinality Definition:
Cardinality is a concept in database design that represents the number of instances of one entity that can be associated with a single instance of another entity. It helps in determining the relationship between two entities in a database.
3. Cardinality Options:
a) 1:1 - This cardinality represents a one-to-one relationship, where each instance of one entity is associated with exactly one instance of another entity.
b) 1:N - This cardinality represents a one-to-many relationship, where each instance of one entity can be associated with multiple instances of another entity, but each instance of the other entity can only be associated with one instance of the first entity.
c) N:M - This cardinality represents a many-to-many relationship, where each instance of one entity can be associated with multiple instances of another entity, and vice versa.
d) M:1 - This cardinality represents a many-to-one relationship, where each instance of one entity can be associated with multiple instances of another entity, but each instance of the other entity can only be associated with one instance of the first entity.
4. Analysis of Options:
In the given scenario, we have multiple teams participating in drag experiments. From the given options, the most suitable cardinality to describe this relationship is 1:N (one-to-many). Let's understand why:
- Each team can participate in multiple drag experiments, but each drag experiment can have only one team associated with it. This aligns with the definition of a one-to-many relationship.
- The 1:1 cardinality (option a) does not fit because it implies that each team can only participate in one drag experiment, which is not the case.
- The N:M cardinality (option c) does not fit because it implies that each team can participate in multiple drag experiments, and each drag experiment can have multiple teams associated with it. However, the given scenario specifies that each drag experiment has only one team associated with it.
- The M:1 cardinality (option d) does not fit because it implies that each team can participate in multiple drag experiments, and each drag experiment can have only one team associated with it. Again, this contradicts the given scenario.
5. Conclusion:
Based on the analysis, the most appropriate cardinality to describe the relationship between the teams and the drag experiments in the given scenario is 1:N (one-to-many). This means that each team can participate in multiple drag experiments, but each drag experiment can have only one team associated with it.
In this question, we are given a scenario where there are multiple teams participating in a series of drag experiments. We need to determine the cardinality that best describes the relationship between the teams and the drag experiments.
2. Cardinality Definition:
Cardinality is a concept in database design that represents the number of instances of one entity that can be associated with a single instance of another entity. It helps in determining the relationship between two entities in a database.
3. Cardinality Options:
a) 1:1 - This cardinality represents a one-to-one relationship, where each instance of one entity is associated with exactly one instance of another entity.
b) 1:N - This cardinality represents a one-to-many relationship, where each instance of one entity can be associated with multiple instances of another entity, but each instance of the other entity can only be associated with one instance of the first entity.
c) N:M - This cardinality represents a many-to-many relationship, where each instance of one entity can be associated with multiple instances of another entity, and vice versa.
d) M:1 - This cardinality represents a many-to-one relationship, where each instance of one entity can be associated with multiple instances of another entity, but each instance of the other entity can only be associated with one instance of the first entity.
4. Analysis of Options:
In the given scenario, we have multiple teams participating in drag experiments. From the given options, the most suitable cardinality to describe this relationship is 1:N (one-to-many). Let's understand why:
- Each team can participate in multiple drag experiments, but each drag experiment can have only one team associated with it. This aligns with the definition of a one-to-many relationship.
- The 1:1 cardinality (option a) does not fit because it implies that each team can only participate in one drag experiment, which is not the case.
- The N:M cardinality (option c) does not fit because it implies that each team can participate in multiple drag experiments, and each drag experiment can have multiple teams associated with it. However, the given scenario specifies that each drag experiment has only one team associated with it.
- The M:1 cardinality (option d) does not fit because it implies that each team can participate in multiple drag experiments, and each drag experiment can have only one team associated with it. Again, this contradicts the given scenario.
5. Conclusion:
Based on the analysis, the most appropriate cardinality to describe the relationship between the teams and the drag experiments in the given scenario is 1:N (one-to-many). This means that each team can participate in multiple drag experiments, but each drag experiment can have only one team associated with it.
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Which cardinality best describes relationship runs where all team has drag experiment to runs?a)1 : 1b)1: Nc)N: Md)M :1Correct answer is option 'B'. Can you explain this answer?
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