Data Modeling and 1
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Questions and Answers

Find the incorrect statement about a 1:N relationship in a data model

  • It implies the presence of more than one case table (correct)
  • It means that Table 1 can have multiple records for each record in Table 2
  • It represents that there are n elements in table 2 for every one element in table 1
  • The tables are associated with each other by mapping keys
  • What does a 1:N relationship represent in a data model?

  • There is one element in table 2 for every n elements in table 1
  • There are n elements in table 1 for every one element in table 2
  • There are n elements in table 2 for every one element in table 1 (correct)
  • There is one element in table 1 for every n elements in table 2
  • How are tables associated in a 1:N relationship in a data model?

  • By cross-referencing indexes
  • By mapping keys (correct)
  • By duplicating records
  • By overlapping data
  • Study Notes

    1:N Relationships in Data Models

    • Represent a relationship between one parent entity and multiple child entities
    • One parent record in one table can be associated with multiple records in another table
    • Used to model relationships where one entity has multiple instances of another entity
    • Tables are associated through a foreign key in the child table that references the primary key in the parent table

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    Description

    Test your knowledge on data modeling with this quiz! Find the incorrect statement about 1:N relationships and learn more about the implications of connecting tables in a data model.

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