Week 1 What is Cloud?



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what is adls? Very imp
Azure Data Lake storage provides cost effective and scalable solution to the Big data analytics.
It is One of the storage service with folder manner structure
ADLS can get any data from anywhere into the data lake in its native format without requiring any prior transformations.
38.diff between ADLS gen1 and ADLS gen2? Very imp
Data Organization:
Gen1

  • Hierarchical namespace, File and folder support.

  • OnlyAdls.

Gen2



Empty containers can exist in blob?
Yes, now its supporting. Microsoft by default providing one log file
What is Blob? Very imp
Blob stands for Binary Large Object. Blob storage is optimized for storing massive amounts of unstructured data such as text or binary data.

What is ADLS Gen2? Very imp
Azure Data Lake Storage Gen2 (ADLS) is a cloud-based repository for both structured and unstructured data. Azure Data Lake Storage Gen2 provide cost effective and scalable solution for big data.
Data Lake is a file-based system that allows to store both structured and unstructured data. All the raw data coming from different sources can be stored in a data lake without pre-defining a schema for it

  • A data lake is a central storage repository that carries big data from many sources of raw data in its native form until it is needed.

  • It can store structured, unstructured data, or semi-structured, which means data can be kept in a more flexible format for future use.

  • A data lake is capable of Store and analyzes petabyte-size files and trillions of objects.

  • It also Develops massively parallel programs easily


Azure Data Lake Storage Gen2 ? imp
Azure Blob Storage + Azure Data Lake Storage Gen1 = Azure Data Lake Storage Gen2


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