Docs updates

app/src/modules/docs/components/sections.ts

@@ -44,16 +44,16 @@ const sections: Section[] = [
 		default: 'readme',
 		children: [
 			{
-				name: 'Database Mirroring',
-				to: '/docs/concepts/database-mirroring',
+				name: 'Platform Overview',
+				to: '/docs/concepts/platform-overview',
 			},
 			{
 				name: 'App Overview',
 				to: '/docs/concepts/app-overview',
 			},
 			{
-				name: 'App Components',
-				to: '/docs/concepts/app-components',
+				name: 'App Extensions',
+				to: '/docs/concepts/app-extensions',
 			},
 			{
 				name: 'Activity & Versions',

docs/concepts/platform-overview.md

@@ -1,10 +1,10 @@
-# Database Mirroring
+# Platform Overview
 
-> Instead of using a predefined "one-size-fits-all" data model to store your content, Directus "mirrors" your actual SQL database in real-time.
+> The Directus platform is primarily comprised of an API and App, working in concert to manage the content of your SQL database.
 
-## Advantages
+## Database Mirroring
 
-The principle is akin to a database client (eg: _phpMyAdmin_), but includes far mor advanced tools, and is safe and intutive enough for non-technical users. This approach has many unique advantages:
+Instead of using a predefined "one-size-fits-all" data model to store your content, Directus "mirrors" your actual SQL database in real-time. The principle is akin to a database client (eg: _phpMyAdmin_), but includes far mor advanced tools, and is safe and intutive enough for non-technical users. This approach has many unique advantages:
 
 * A custom SQL database schema, tailored to your exact requirements
 * Significant performance improvements through optimizations and indexing
@@ -12,6 +12,24 @@ The principle is akin to a database client (eg: _phpMyAdmin_), but includes far
 * Direct database access and the full power of raw/complex SQL queries
 * Allows importing existing databases, unaltered and without any migrations
 
+## Directus API
+
+The Directus API uses _Database Mirroring_ to dynamically generate REST endpoints and a GraphQL schema based on the connected database's architecture. It is written in [Node.js](#) and uses database abstraction to support most [SQL database vendors](#).
+
+### Relevant Docs
+
+* [API Reference](#)
+* [API Extensions](#)
+
+## Directus App
+
+The Directus App is decoupled from, and powered by, the Directus API. It provides a way for both technical admins and non-technical users to view and manage content of the connected database. It is written in [Vue.js](#) v3, is completely modular, and is highly customizable.
+
+### Relevant Docs
+
+* [App Overview](#)
+* [App Extensions](#)
+
 ## Projects & Environments
 
 A Project is a complete instance of Directus. Each project primarily represents a database, but also includes a configuration file and any related asset storage. This modular approach means you can also create different environments (eg: Dev, Staging, Prod) by simply creating additional project instances.

docs/guides/collections.md

@@ -1,6 +1,6 @@
 # Collections
 
-> TK
+> You can manage your collections within the Data Model section of the App's Settings, via the [API Collections Endpoint](#), or directly within the database. If you're unfamiliar with Directus Collections, please start by reading our [Understanding Collections](#) docs.
 
 ## Creating a Collection
 

docs/guides/fields.md

@@ -26,6 +26,10 @@ Keep in mind that Directus Fields are just a database columns. Therefore you can
 2. Click the **More Options** icon for the field you want to delete
 3. Click the **Duplicate Field** option
 
+:::warning Relational and Primary Key Fields
+It is not currently possible to duplicate relational fields or a collection's primary key.
+:::
+
 ## Adjusting Field Layout
 
 The layout of the collection's form is determined by the following field options.