CMS: Differences Between Single Item and Multiple Item Collections
Manage your content for static pages by storing it in a collection with a single item. You can display this content by connecting page elements such as text, images, videos or buttons to fields in your collection.Before you begin:Make sure to add the CMS to your site. Collections with a single item vs. multiple itemsA collection with a single item stores content that is more suited for static pages. You can display this content on one or more pages of your site. By storing it in the CMS, your content is kept separate from your page. This is really useful when collaborating on pages. In this scenario, nobody can accidentally delete or alter the content.This type of collection does not have a table layout. Instead, you add fields to build the collection as you would build a form. A collection with a single item is best suited for non-repeatable content, such as an 'about' page, or a single element on a site, like a picture or text box.Display your content by connecting elements on the page to fields in your collection.Both types of collections store content, but they serve different purposes. A collection with a single item has just one block of content and is suited for static pages. A collection with multiple items can store large amounts of content and is suited for dynamic pages.Note:Once you create a collection, it can't be converted from single item to multiple items, or vice versa.Collection with a single itemA collection with a single item contains one block of content made up of standard fields that you add to. The content can appear on one or more static pages of your website.With a collection containing a single item, you can:
Model your content into an easy-to-edit and easy-to-share form that's great for collaboration. Choose any page elements (e.g. text, images, videos, buttons) in any order, to be part of the collection. Build your content in the collection as you would add fields to a form.This type of collection does not have a table layout in the CMS. It is best suited for non-repeatable content, such as an about page or a single element on a site, like a picture or a text box.Collections with multiple itemsA collection with multiple items can store large amounts of content, including content you create or content submitted by site visitors.Advantages of a multiple item collection include:
By using it with dynamic pages, your site is not restricted to 100 static pages. Content can appear in an element such as a repeater or a table.  It is very well suited to pages for property listings, portfolios, recipes, and so on. It has a familiar structure, consisting of a table made up of items (rows) and fields (columns). These rows and columns contain your content.Limitations of a collection with a single itemUsing a collection with a single item provides a safe and secure environment for storing content, making it an ideal solution for collaborating. There are, however, some limitations compared to collections storing multiple items.While creating a collection with a single item:
Once created, it can't be converted to a collection for multiple items. The Draft & Publish Items option can't be enabled.While managing its content:
The primary field parameter can't be applied to a field. You can't import content. Reference and multi-reference fields can't be created.While connecting elements in the Editor to data in a collection with a single item:
Only “Read-Only” mode can be used for datasets. There is no Filter, Sort, or Number of items settings. You can't connect user input elements in the Editor.