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openshift-docs/modules/olm-arch-catalog-registry.adoc
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// Module included in the following assemblies:
//
// * operators/understanding/olm/olm-arch.adoc
// * operators/operator-reference.adoc
:_mod-docs-content-type: CONCEPT
[id="olm-arch-catalog-registry_{context}"]
= Catalog Registry
The Catalog Registry stores CSVs and CRDs for creation in a cluster and stores metadata about packages and channels.
A _package manifest_ is an entry in the Catalog Registry that associates a package identity with sets of CSVs. Within a package, channels point to a particular CSV. Because CSVs explicitly reference the CSV that they replace, a package manifest provides the Catalog Operator with all of the information that is required to update a CSV to the latest version in a channel, stepping through each intermediate version.