18 Relationships questions from the EF Core bank, written for Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd.
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A.a reference or collection member on an entity that lets code traverse to related entities in object form
B.an association, supported directly since version 5, where rows on both sides relate to multiple rows on the other through an implicit join table
C.an association where a single principal row is referenced by many dependent rows, the most common relationship cardinality
D.the behavior where removing a principal row automatically removes the dependent rows that require it
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2. Which term means: "an association where a single principal row is referenced by many dependent rows, the most common relationship cardinality"?
Junior
A.cascade delete
B.principal and dependent
C.foreign key
D.one-to-many
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3. Which statement is correct?
Junior
A.one-to-many — the behavior where removing a principal row automatically removes the dependent rows that require it
B.one-to-many — an association where a single principal row is referenced by many dependent rows, the most common relationship cardinality
C.one-to-many — the two roles in an association where one end owns the key the other end refers to
D.one-to-many — an association, supported directly since version 5, where rows on both sides relate to multiple rows on the other through an implicit join table
Answer + AI explanation with Pro
4. What is many-to-many?
Mid
A.the two roles in an association where one end owns the key the other end refers to
B.the behavior where removing a principal row automatically removes the dependent rows that require it
C.an association where a single principal row is referenced by many dependent rows, the most common relationship cardinality
D.an association, supported directly since version 5, where rows on both sides relate to multiple rows on the other through an implicit join table
Answer + AI explanation with Pro
5. Which term means: "an association, supported directly since version 5, where rows on both sides relate to multiple rows on the other through an implicit join table"?
Mid
A.navigation property
B.one-to-many
C.principal and dependent
D.many-to-many
Answer + AI explanation with Pro
6. Which statement is correct?
Mid
A.many-to-many — the behavior where removing a principal row automatically removes the dependent rows that require it
B.many-to-many — an association, supported directly since version 5, where rows on both sides relate to multiple rows on the other through an implicit join table
C.many-to-many — an association where a single principal row is referenced by many dependent rows, the most common relationship cardinality
D.many-to-many — the two roles in an association where one end owns the key the other end refers to
Answer + AI explanation with Pro
7. What is foreign key?
Junior
A.an association, supported directly since version 5, where rows on both sides relate to multiple rows on the other through an implicit join table
B.the two roles in an association where one end owns the key the other end refers to
C.a reference or collection member on an entity that lets code traverse to related entities in object form
D.the dependent-side property holding the value that points back to the primary key of the principal row
Answer + AI explanation with Pro
8. Which term means: "the dependent-side property holding the value that points back to the primary key of the principal row"?
Junior
A.foreign key
B.navigation property
C.cascade delete
D.principal and dependent
Answer + AI explanation with Pro
9. Which statement is correct?
Junior
A.foreign key — an association where a single principal row is referenced by many dependent rows, the most common relationship cardinality
B.foreign key — the two roles in an association where one end owns the key the other end refers to
C.foreign key — a reference or collection member on an entity that lets code traverse to related entities in object form
D.foreign key — the dependent-side property holding the value that points back to the primary key of the principal row
Answer + AI explanation with Pro
10. What is navigation property?
Junior
A.the dependent-side property holding the value that points back to the primary key of the principal row
B.an association, supported directly since version 5, where rows on both sides relate to multiple rows on the other through an implicit join table
C.the two roles in an association where one end owns the key the other end refers to
D.a reference or collection member on an entity that lets code traverse to related entities in object form
Answer + AI explanation with Pro
11. Which term means: "a reference or collection member on an entity that lets code traverse to related entities in object form"?
Junior
A.many-to-many
B.navigation property
C.foreign key
D.one-to-many
Answer + AI explanation with Pro
12. Which statement is correct?
Junior
A.navigation property — an association where a single principal row is referenced by many dependent rows, the most common relationship cardinality
B.navigation property — a reference or collection member on an entity that lets code traverse to related entities in object form
C.navigation property — an association, supported directly since version 5, where rows on both sides relate to multiple rows on the other through an implicit join table
D.navigation property — the two roles in an association where one end owns the key the other end refers to
Answer + AI explanation with Pro
13. What is principal and dependent?
Mid
A.an association where a single principal row is referenced by many dependent rows, the most common relationship cardinality
B.the two roles in an association where one end owns the key the other end refers to
C.an association, supported directly since version 5, where rows on both sides relate to multiple rows on the other through an implicit join table
D.the behavior where removing a principal row automatically removes the dependent rows that require it
Answer + AI explanation with Pro
14. Which term means: "the two roles in an association where one end owns the key the other end refers to"?
Mid
A.many-to-many
B.one-to-many
C.principal and dependent
D.navigation property
Answer + AI explanation with Pro
15. Which statement is correct?
Mid
A.principal and dependent — a reference or collection member on an entity that lets code traverse to related entities in object form
B.principal and dependent — the behavior where removing a principal row automatically removes the dependent rows that require it
C.principal and dependent — the two roles in an association where one end owns the key the other end refers to
D.principal and dependent — an association, supported directly since version 5, where rows on both sides relate to multiple rows on the other through an implicit join table
Answer + AI explanation with Pro
16. What is cascade delete?
Senior
A.an association, supported directly since version 5, where rows on both sides relate to multiple rows on the other through an implicit join table
B.the dependent-side property holding the value that points back to the primary key of the principal row
C.the two roles in an association where one end owns the key the other end refers to
D.the behavior where removing a principal row automatically removes the dependent rows that require it
Answer + AI explanation with Pro
17. Which term means: "the behavior where removing a principal row automatically removes the dependent rows that require it"?
Senior
A.foreign key
B.cascade delete
C.many-to-many
D.principal and dependent
Answer + AI explanation with Pro
18. Which statement is correct?
Senior
A.cascade delete — an association, supported directly since version 5, where rows on both sides relate to multiple rows on the other through an implicit join table
B.cascade delete — the behavior where removing a principal row automatically removes the dependent rows that require it
C.cascade delete — an association where a single principal row is referenced by many dependent rows, the most common relationship cardinality
D.cascade delete — the dependent-side property holding the value that points back to the primary key of the principal row
Answer + AI explanation with Pro
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