A data lakehouse’s metadata layer is the key advantage it has over storage options like the lake and warehouse. Metadata is data that offers information about other pieces of data. Lakehouses keep schemas of structured and semi-structured data sets in the metadata layer, making it easier to apply them while reading. They are designed to store all data types as objects in object stores like Amazon S3. Storageĭata lakehouses use open-source file formats to store unstructured, structured and semi-structured data. Many other tools help with data streaming and other functions. Organizations can use tools like Amazon Data Migration Service (Amazon DMS) to import data from NoSQL databases and RDBMSs.
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