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<p>Cosmos is a distributed database system used for any purpose that a DB can be used for. Data Lake is a "Big data" solution that is designed for storing and processing analytical data. It isn't usable as a traditional DB.&nbsp;</p>
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Cosmos is a distributed database system used for any purpose that a DB can be used for. Data Lake is a "Big data" solution that is designed for storing and processing analytical data. It isn't usable as a traditional DB. 

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Don't they both use U-SQL?<br />
It was this <a href="https://en.wikipedia.org/wiki/Azure_Data_Lake" rel="ugc">this</a> article that also prompted my question.
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Don't they both use U-SQL?
It was this this [https://en.wikipedia.org/wiki/Azure_Data_Lake] article that also prompted my question.

AlHal2

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I think you've answered the original question, so thanks very much.<br />
Am I correct in saying that the data lake has more powerful and faster analytics than cosmos? &nbsp;I'm just trying to consider the uses cases of each.<br />
Is the data lake better for unstructured data?<br />
Please could you elaborate on what you mean by database infrastructure. &nbsp;I know that relational databases have tables, views and stored procedures. &nbsp;I'm not sure how the term applies to non relational databases.
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I think you've answered the original question, so thanks very much.
Am I correct in saying that the data lake has more powerful and faster analytics than cosmos?  I'm just trying to consider the uses cases of each.
Is the data lake better for unstructured data?
Please could you elaborate on what you mean by database infrastructure.  I know that relational databases have tables, views and stored procedures.  I'm not sure how the term applies to non relational databases.

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What is the difference between Azure Data Lake and Cosmos Db?<br />
Is Data Lake simply the next version or does it include extra functionality?<br />
What is best for handling unstructured data?
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What is the difference between Azure Data Lake and Cosmos Db?
Is Data Lake simply the next version or does it include extra functionality?
What is best for handling unstructured data?

What is the difference between Azure Data Lake and Cosmos Db?

Microsoft Azure is a cloud computing platform and infrastructure for building, deploying and managing applications and services through datacenters. It provides both platform-as-a-service (PaaS) and infrastructure-as-a-service (IaaS) services and supports many different programming languages, tools and frameworks, including both Microsoft-specific and third-party software and systems. Cloud Services is a PaaS environment and can be used to create scalable applications and services; there are specific software development kits (SDKs) provided by Microsoft for Python, Java, Node.js and .NET. Azure also has file and storage services, data management, analytics and DNS services.