One benefit of a unified data catalog is that users can search the entire set of objects or any meaningful subset.
Each data object has attributes that store information such as the time the object was created, the name of the owner, the last time the object was modified, and so on. These system attributes are automatically defined for all objects. In addition, data owners or users can create custom attributes for any data item for which they have write permission, and specify values for those attributes. Because users can search the data catalog based on attribute values, you may want to create attributes that you know users will eventually want to search on. For example, you could define a Project attribute and assign values for individual projects that would allow users to search for data associated with a specific project. When users search the data catalog, they see only data objects for which they have at least read access.
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