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axiom-core-data

Compares Core Data and SwiftData for persistence architecture decisions on Apple platforms.

Updated Dec 23, 2025
Search Tags:#migration#concurrency#ios#persistence#data-modeling#swiftdata#core data
One-click install
npx skills add https://github.com/pradeepmouli/swift-template --skill axiom-core-data-pradeepmouli
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: axiom-core-data
Source: https://github.com/pradeepmouli/swift-template/tree/main/.agents/skills/axiom-core-data
Command: npx skills add https://github.com/pradeepmouli/swift-template --skill axiom-core-data-pradeepmouli

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps engineering teams decide between Core Data and SwiftData, set up the persistence stack, model relationships, and reason about concurrency to prevent thread-confinement errors and migration crashes.

Core Features & Use Cases

  • Decision guidance: when to choose Core Data vs SwiftData in iOS/macOS apps.
  • Stack setup & modeling: guidance on selecting a stack architecture, modeling relationships, and concurrency patterns.
  • Migration considerations: safe migration strategies and testing guidelines.

Quick Start

Provide a structured comparison of Core Data and SwiftData for a multi-platform app, including migration considerations.

Frequently Asked Questions about axiom-core-data

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
Core Data vs SwiftData: which persistence framework should I choose for my iOS app?▼

Choosing between Core Data and SwiftData depends on your architecture needs. SwiftData offers modern Swift integration, while Core Data provides mature concurrency control and complex migration handling for advanced persistence scenarios.

How do I model relationships and set up the persistence stack in SwiftData?▼

To set up SwiftData persistence, you model relationships using Swift macros and configure the ModelContainer. This Skill guides stack architecture selection and relationship modeling to ensure proper data modeling on Apple platforms.

How do I prevent thread-confinement errors and handle concurrency in Core Data?▼

Preventing thread-confinement errors in Core Data requires strict concurrency patterns like main queue context separation. This Skill provides concurrency handling guidance to avoid runtime crashes during parallel data access.

What are safe migration strategies when moving an existing app to SwiftData?▼

Safe migration to SwiftData requires careful migration checks and testing guidelines. This Skill outlines safe migration strategies to prevent data loss and migration crashes when transitioning your persistent data stack.

Does SwiftData support complex data modeling for multi-platform Apple apps?▼

SwiftData supports multi-platform Apple apps but has varying maturity for complex data modeling. This Skill helps qualify stack setup and relationship modeling fit against Core Data for your specific scale and context.

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