SwiftUI Core Data Quiz

Take this quiz to test your understanding of the Core Data architecture in SwiftUI.

Which method is used to save a Managed Object to storage in Core Data?

persistObject()

save()

saveContext()

commitChanges()

None

How are changes to data objects managed in Core Data before they are saved?

They are stored in a temporary cache.

They are directly written to the database.

They are held in the managed object context.

They are encrypted and stored.

None

What happens when the save() method is called on a managed object context?

The changes are committed to the persistent store.

A new entity is created.

The user interface is refreshed.

The datbase connection is closed.

None

What is a Fetch Request used for in Core Data?

To create new data attributes.

To modify data entities.

To retrieve specific data objects from storage.

To save data objects.

None

How is data stored in Core Data's persistent store?

Using binary encoding.

As managed objects through an object-oriented abstraction layer.

In the format specified by the developer.

As plain text files.

None

Which Core Data component defines the schema for managed objects?

Managed Object Context

Persistent Store

Entity Description

NSFetchRequest

None

What does the Managed Object Context maintain in relation to the persistent store?

Network status.

The user interface components.

Data encryption keys.

The status of objects and their relationships.

None

What is the purpose of the NSPersistentContainer in Core Data?

To encapsulate the Core Data stack.

To store raw data.

To manage remote database connections.

To provide a UI for managing data presentation.

None

How do you perform a one-time fetch operation in Core Data?

By writing a custom SQL query.

By using @FetchRequest with a dynamic predicate.

By creating an NSFetchRequest instance and passing it to the fetch() method.

By calling the fetchAll() method.

None

10.

What type of relationships can Core Data entities have?

One-to-one, one-to-many, many-to-many

Single, multiple, composite

Static, dynamic, hybrid

Parent, child, sibling

None

11.

What is a Managed Object Model in Core Data?

An animation handler.

A SQL query generator.

A schema that defines the structure of data entities.

A network request manager.

None

12.

Which Core Data component is responsible for managing the state of data objects?

Entity Description

Data Model

Persistent Store

Managed Object Context

None

13.

What is a Predicate used for in Core Data?

To create new entities.

To save data to tehy database.

To manage user interactions.

To define criteria for filtering data.

None

14.

How can data be sorted when using the @FetchRequest property wrapper?

By creating a new SQL query.

By using NSSortDescriptor in the @FetchRequest.

By defining sort rules in the database.

By applying a sorting algorithm in Swift.

None

15.

What is the @FetchRequest property wrapper used for in Core Data?

To delete data objects.

To automatically update variables with data from the database.

To save data objects.

To encrypt data objects.

None

16.

What is Core Data primarily used for in iOS app development?

Document and file storage.

Creating animations and transitions.

Storing data in a structured database.

Managing user authentication.

None

17.

How can attributes of a Managed Object be set before saving it to storage?

By using JSON parsing.

By writing a new SQL query.

By assigning values to the object’s properties.

By directly modifying the database schema.

None

18.

Which method is used to initialize the Persistent Container?

initializeCoreData()

loadPersistentStores()

initContainer()

createContainer()

None

19.

What does the NSPersistentContainer instance provide access to?

The managed object context.

The user interface elements.

The SQlLite layer.

The database manager.

None

20.

How are Entity descriptions defined in Core Data?

By creating JSON files.

Through a command-line tool.

Using Xcode’s entity editing environment.

By writing custom SQL scripts.

None

21.

What is the default persistent store type in Core Data?

XML

SQLite

Binary

Memory-based

None

22.

What does the Persistent Store Coordinator do in Core Data?

Encrypts data for secure storage.

Manages the user interface layout.

Coordinates access to multiple persistent object stores.

Handles user input and gestures.

None

23.

What is the purpose of a Fetch Request in Core Data?

To retrieve data objects based on defined criteria.

To perform database searches.

To store binary data.

To configure the app’s user interface.

None

24.

What is a Fetched Property in Core Data?

A weak, one-way relationship between two entities.

A data request handler.

A direct relationship between two entities.

A type of persistent store.

None

25.

What is an Entity in Core Data?

A storage location for images.

A user-defined data type.

A description that defines a data model for managed objects.

A class that handles networking.

None

26.

What is the role of the Managed Object Context in Core Data?

To manage user interactions.

To store files and images.

To act as a bridge between the app and the persistent store.

To handle data encryption.

None

27.

What are Managed Objects in Core Data?

Database tables that store raw data.

Objects that represent data stored in the database.

Objects that perform data validation.

Objects that connect to remote database servers.

None

28.

What is the purpose of the Persistent Container in Core Data?

To handle the creation of the Core Data stack.

To export data to external databases.

To manage the user interface of the app.

To store images and media files.

None

29.

Which underlying database does Core Data use by default?

SQLite

Oracle

PostgreSQL

MySQL

None

Congratulations on completing the SwiftUI Core Data Quiz.

Click the Submit button to review your results.

Enter your email address below if you would like to receive a copy of your test results.

Time’s up

←SwiftUI CloudKit Quiz

SwiftUI DocumentGroup Quiz→

Categories Quiz