Learn Hibernate and JPA – Module 1 Lesson 1 – Quiz

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Question 1 of 5

1. Question

Which of the following best describes the root cause of Object-Relational Impedance Mismatch?

Java’s object-oriented model and the relational model differ in how they represent and manage data
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The mismatch appears when there is a poor database scheme design
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Good practices indicate that we always need some middleware/adapting layer, so a mismatch has to be created artificially
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Vendors don’t want to create standard solutions to promote vendor lock-in
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Question 2 of 5

2. Question

In the context of ORM, which statement is TRUE about entities and relationships?

An entity always corresponds to a single row in a table, and each field must match a column exactly
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ORM metadata is optional, the framework will always address the entity and relationships mapping correctly
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An entity in an ORM usually represents a table in the database, and relationships like one-to-many are managed via object references
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We need to remove all class associations in Java since this will be defined by the ORM
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Question 3 of 5

3. Question

What is the main purpose of the Jakarta Persistence API (JPA)?

It defines proprietary annotations that only Hibernate can use
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It ensures code remains vendor-locked to a specific ORM implementation
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It provides a standard specification and API for ORM in the Java ecosystem, decoupled from specific implementations
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It requires developers to write raw SQL queries for all database operations
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Question 4 of 5

4. Question

Why is Hibernate often considered ‘the de facto JPA implementation’?

It’s the only JPA provider available
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Hibernate predates JPA, is mature, implements the specification fully, and has rich community support
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JPA is built on top of Hibernate’s proprietary APIs
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Other vendors cannot implement JPA because it’s proprietary to Hibernate
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Question 5 of 5

5. Question

Which of the following statements about ORM frameworks is FALSE?

An ORM framework abstracts away most SQL code by using Java objects and relationships
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ORMs allow developers to focus on the object model instead of manual SQL handling
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ORMs eliminate the need to understand SQL or relational concepts altogether
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ORMs help handle mapping complexities like inheritance, identity, and associations
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Learn Hibernate and JPA – Module 1 Lesson 1 – Quiz

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