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iOS Persistence and Core Data

Fernando Rodriguez, Eden Shapiro, and Kate Rotondo

Take Udacity's free iOS Persistence course and learn how to store app data using three common techniques. Persisting data is a core skill for any iOS developer.

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What's inside

Syllabus

Learn about simple persistence and how to save small pieces of data, like user preference, using NSUserDefaults.

Learn about the iOS File System, the “sandbox”, and how to access these files using NSFileManager.

Explore what a data layer is, and how to convert a non-Core Data app to have a Core Data model.

Set up the classes we need to get Core Data up and running so that we can create, save, and delete model objects.

Enable user interfaces to reactively update whenever the model changes.

Safely migrate user data between versions, and move slow work to the background.

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Helps students develop skills that are relevant to iOS development

Provides a solid foundation for beginners to understand iOS Data Store

Provides a structured approach to learning iOS Data Store concepts

Taught by experienced instructors in iOS development

Covers essential topics for iOS developers, such as NSUserDefaults, NSFileManager, and Core Data

May require additional resources for students with no prior programming experience

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Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in iOS Persistence and Core Data with these activities:

Review Native iOS development

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Brush up on your iOS development skills to better prepare for this course.

Browse courses on iOS Development

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Review the basics of Swift programming.
Create a simple iOS app using Xcode.
Explore the iOS SDK documentation.

Organize the course materials

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Tidy up your notes and course materials for improved access and retention.

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Create a central repository for all course materials
Organize materials into folders and subfolders
Use tags or keywords for easy searching

Review Core Data concepts

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Refresh your memory on the basics of Core Data before digging into the course material.

Browse courses on Core Data

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Read up on the Core Data documentation
Watch a Core Data tutorial

Seven other activities

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Practice NSUserDefaults

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Build muscle memory for using NSUserDefaults to save small pieces of data.

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Create a new Xcode project
Create an instance of NSUserDefaults
Set a value for a key in the NSUserDefaults instance
Get the value for a key from the NSUserDefaults instance
Remove a value for a key from the NSUserDefaults instance

Follow a Core Data tutorial

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Supplement your learning by following a step-by-step Core Data tutorial.

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Search for a reputable Core Data tutorial
Follow the tutorial instructions
Adapt the tutorial code to your own project (optional)

Follow iOS Core Data tutorials

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Enhance your understanding of Core Data by following guided tutorials that provide hands-on practice.

Browse courses on Core Data

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Find a reputable iOS Core Data tutorial.
Follow the tutorial step-by-step and implement the concepts in your own iOS project.
Experiment with different Core Data features and explore its capabilities.

Create a sample iOS app using NSFileManger

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Enhance your understanding of file management in iOS by creating a practical app.

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Create a new Xcode project
Import the NSFileManager framework
Create an instance of NSFileManager
Use NSFileManager to create, read, write, and delete files and directories
Test your app

Attend a study group or join a coding challenge

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Connect with other students and work on iOS persistence challenges together.

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Find a study group or coding challenge
Attend the session or challenge
Participate in discussions and exercises
Share knowledge and help others

Build a simple data management app

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Integrate your iOS persistence skills into a real-world project.

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Design the app's data model
Implement the data persistence using one or more of the techniques covered in the course
Create a user interface for interacting with the data
Test and debug the app

Build an iOS app using Core Data

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Apply your knowledge by creating a fully functional iOS app that utilizes Core Data for data persistence.

Browse courses on iOS App Development

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Design the architecture of your app and its data model.
Implement Core Data in your app to manage and persist data.
Develop user interfaces that interact with the Core Data model.
Test your app thoroughly to ensure data integrity and functionality.

Career center

Learners who complete iOS Persistence and Core Data will develop knowledge and skills that may be useful to these careers:

iOS Developer

iOS Developers create and maintain applications for Apple devices, such as the iPhone, iPad, and iPod touch. They work with a variety of programming languages and tools to develop apps that are both functional and visually appealing, and which provide a great user experience.

See salaries and explore the career path for iOS Developer

Software Engineer

Software Engineers apply engineering principles to the design, development, deployment, and maintenance of software systems. They use a variety of programming languages and tools to create software that meets the needs of users, and which is both efficient and reliable.

See salaries and explore the career path for Software Engineer

Application Developer

Application Developers create and maintain applications for a variety of platforms, including mobile devices, desktop computers, and web browsers. They work with a variety of programming languages and tools to develop apps that are both functional and visually appealing, and which provide a great user experience.

See salaries and explore the career path for Application Developer

Database Administrator

Database Administrators are responsible for the design, implementation, and maintenance of databases. They work with a variety of database management systems to ensure that data is stored, accessed, and managed in a secure and efficient manner.

See salaries and explore the career path for Database Administrator

Data Analyst

Data Analysts collect, analyze, and interpret data to help businesses make better decisions. They use a variety of statistical and data analysis techniques to identify trends, patterns, and relationships in data.

See salaries and explore the career path for Data Analyst

Business Analyst

Business Analysts work with businesses to identify and solve problems. They use a variety of techniques to analyze business processes and data, and to develop solutions that improve efficiency and profitability.

See salaries and explore the career path for Business Analyst

Project Manager

Project Managers plan, execute, and close projects. They work with a variety of stakeholders to ensure that projects are completed on time, within budget, and to the required quality standards.

See salaries and explore the career path for Project Manager

Systems Analyst

Systems Analysts design, develop, and implement computer systems. They work with a variety of stakeholders to identify and solve problems, and to develop solutions that improve efficiency and effectiveness.

See salaries and explore the career path for Systems Analyst

Information Architect

Information Architects design and organize websites and other digital products. They work with a variety of stakeholders to ensure that information is presented in a clear and concise manner, and that users can easily find the information they need.

See salaries and explore the career path for Information Architect

UX Designer

UX Designers design and evaluate the user experience of websites and other digital products. They work with a variety of stakeholders to ensure that products are easy to use, efficient, and enjoyable.

See salaries and explore the career path for UX Designer

Web Developer

Web Developers design and develop websites and other web-based applications. They work with a variety of programming languages and tools to create websites that are both functional and visually appealing, and which provide a great user experience.

See salaries and explore the career path for Web Developer

Data Scientist

Data Scientists use a variety of statistical and data analysis techniques to extract insights from data. They work with a variety of businesses to help them make better decisions, improve efficiency, and increase profitability.

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Machine Learning Engineer

Machine Learning Engineers design and develop machine learning models. They work with a variety of programming languages and tools to create models that can learn from data and make predictions.

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Data Engineer

Data Engineers design and develop data pipelines. They work with a variety of programming languages and tools to create pipelines that can collect, clean, and transform data.

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Cloud Architect

Cloud Architects design and implement cloud computing solutions. They work with a variety of cloud computing platforms to create solutions that are scalable, reliable, and cost-effective.

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Reading list

We've selected 13 books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in iOS Persistence and Core Data.

Core Data

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Comprehensive guide to Core Data, covering everything from the basics to advanced topics such as concurrency and unit testing. It valuable resource for anyone who wants to learn Core Data in depth.

iOS Persistence and Core Data

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What's inside

Syllabus

Good to know

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Activities

Career center

Reading list

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