Meta-classes are the low-level equivalence of catalog content types, and meta-fields are the low-level equivalence of those content types' properties. Using content models is the recommended approach, but in some cases, meta-fields may be imported from an external system or carried over from a legacy implementation.
Guidelines for working with meta classes and meta fields
Use solid naming conventions and standards when creating fields and classes. While complex data types (images, files) are supported by the metadata system, their use can have a negative impact on performance. To avoid this, use the Optimizely asset/media system and/or image file servers. Use meta-classes to model different types of commerce content.
The following example shows a meta-class named Fashion_Product_Class to model fashion products in a sample fashion catalog. The designer of this catalog creates a different meta-class to model fashion variants/SKUs called Fashion_Item_Class. The main difference between the two classes is the additional meta-fields on the item class to support the variant's size and color.
Last updated: Nov 28, 2016