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@ -4,13 +4,13 @@ description: How can you enhance data discovery?
# Metadata # Metadata
Imagine you're searching for data on Spanish almond production within a dApp operating within the Ocean ecosystem, managed by a European fruit and nut association. This hypothetical dApp may host a vast collection of datasets, making it essential to have a way to identify the relevant ones. What can we do about it? :thinking: One effective approach is to have **metadata** associated with each dataset to serve as valuable information about the data itself. Metadata plays a **crucial role** in asset **discovery**, providing essential information such as **asset type, name, creation date, and licensing details**. Each data asset can have a [decentralized identifier (DID)](identifiers.md) that resolves to a DID document ([DDO](ddo-specification.md)) containing associated metadata. The DDO is essentially a collection of fields in a [JSON](https://www.json.org/) object. To understand working with OCEAN DIDs, you can refer to the [DID documentation](identifiers.md). For a more comprehensive understanding of metadata structure, the [DDO Specification](ddo-specification.md) documentation provides in-depth information.
<figure><img src="../.gitbook/assets/gif/data_everywhere.gif" alt=""><figcaption><p>Data discovery</p></figcaption></figure> <figure><img src="../.gitbook/assets/gif/data_everywhere.gif" alt=""><figcaption><p>Data discovery</p></figcaption></figure>
Metadata plays a **crucial role** in asset **discovery**, providing essential information such as **asset type, name, creation date, and licensing details**. Each data asset can have a [decentralized identifier (DID)](identifiers.md) that resolves to a DID document ([DDO](ddo-specification.md)) containing associated metadata. The DDO is essentially a collection of fields in a [JSON](https://www.json.org/) object. To understand working with OCEAN DIDs, you can refer to the [DID documentation](identifiers.md). For a more comprehensive understanding of metadata structure, the [DDO Specification](ddo-specification.md) documentation provides in-depth information. In general, any dApp within the Ocean ecosystem is required to store metadata for every listed dataset. The metadata is useful to determine which datasets are the most relevant.
In general, any dApp within the Ocean ecosystem is required to store metadata for every listed dataset. While specific metadata requirements may vary, certain fundamental pieces of metadata, including: So, for example, imagine you're searching for data on Spanish almond production in an Ocean-powered dApp. You might find a large number of datasets, making it difficult to identify the most relevant one. What can we do about it? :thinking: This is where metadata is useful! The metadata provides valuable information that helps you identify the most relevant dataset. This information can include:
* **name**, e.g. “Largueta Almond Production: 1995 to 2005” * **name**, e.g. “Largueta Almond Production: 1995 to 2005”
* **dateCreated**, e.g. “2007–01–20” * **dateCreated**, e.g. “2007–01–20”