What Is a Data Warehouse?

27 Comments



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What Is a Data Warehouse? Data warehousing is one of the hottest topics both in business and in data science. But if you’re new to the field, you’re probably wondering what a data warehouse is, why we need it, and how it works. Don’t worry because in 4 minutes you’ll know the answers to all these questions.

First, let’s start with a definition: what is the meaning of the phrase: ‘Single source of truth’. In information systems theory, the ‘single source of truth’ is the practice of structuring all the best quality data in one place.

But what if you knew that there is one single place where you would always have the single source of information? That would be quite helpful wouldn’t it? Well, a data warehouse exists to fill that need.

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27 Comments
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      Atharv Jadhav
      May 05, 2022 07:42 am Reply

      You said that data warehouse is the single source of truth. But if the company has some other data which they want to store elsewhere then how and why would data warehouse be the single source of truth??

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      123
      May 05, 2022 07:42 am Reply

      What a stupid way to explain stuff.

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      w1 Cecilia
      May 05, 2022 07:42 am Reply

      data warehouse

      final final really final ???
      what is the single source of data truth

      subject oriented: only interested data
      integrated: common standard
      time variant: historical data
      nonvolatile: can not be changrd or deleted
      summarized

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      42Siren
      May 05, 2022 07:42 am Reply

      this video is useless

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      Abdurrahman khyaal
      May 05, 2022 07:42 am Reply

      Good

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      Nikita Sharma
      May 05, 2022 07:42 am Reply

      0:58 yesss

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      Juhi Mansinghani
      May 05, 2022 07:42 am Reply

      This is amazing…and so easy to digest for someone who is new to the terms

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      Tina Nonn
      May 05, 2022 07:42 am Reply

      What is the exact university specialization to study data warehouse

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      -Frosty Fire-
      May 05, 2022 07:42 am Reply

      yes

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      RelaxingYou
      May 05, 2022 07:42 am Reply

      superbbbbbb

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      David OR
      May 05, 2022 07:42 am Reply

      Simple, Clear and Accurate!

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      Rahul Dey
      May 05, 2022 07:42 am Reply

      What if I want to retrieve different versions of the data, like I may need to have some previous dataset which was modified by now. Can I retrieve it from a data warehouse?

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      Malak Waseem
      May 05, 2022 07:42 am Reply

      What is historical data in data warehousing?

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      RD
      May 05, 2022 07:42 am Reply

      The single source of truth is god. God is information of all kinds.

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      playandrepeat
      May 05, 2022 07:42 am Reply

      I've watched 2833875 videos explaining what a data warehouse is and I still don't know if it's physical or just a drive

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      Javadd Sales
      May 05, 2022 07:42 am Reply

      so… is it like a personal software or something of a company that allows access to its data? like, what does it "look" like?

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      Angel Gray
      May 05, 2022 07:42 am Reply

      Thank you for this 💖

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      Dhanush sivajaya
      May 05, 2022 07:42 am Reply

      Thankyou sir

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      Katy T. Fidem
      May 05, 2022 07:42 am Reply

      Lullaby

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      Shatw Mhamad
      May 05, 2022 07:42 am Reply

      👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻

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      Ahmed Jguirim
      May 05, 2022 07:42 am Reply

      i'd go {final , final1, final2 ..}

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      TECH EASY LEARNING
      May 05, 2022 07:42 am Reply

      Higly informative and excellent presentation.

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      Optimistic Nilhist
      May 05, 2022 07:42 am Reply

      A data warehouse is a single source of truth. It contains all the data of a company. It is a source of information. The features of the data warehouse are:
      1. Non Volatile: meaning data once stored will not go away.
      2. Summarized: The data is processed, segmented and stored so that analytics tool can use them
      3. Time Variant: It stores data for a period of time. It also contains historical data.
      4. Integrated: It has work with various analytics and reporting tools.
      5. Subject Oriented: Its stores data related to a subject.

      Data Warehouses are used for analysis and reporting and various analysis and reporting tools use data from the warehouse.

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      TECH EASY LEARNING
      May 05, 2022 07:42 am Reply

      In datawarehusing we call it as single source but in MDM we call it as best version of truth. good content

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      Khadija Mahmoud
      May 05, 2022 07:42 am Reply

      thanks !!!

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      남재희
      May 05, 2022 07:42 am Reply

      기호팍…………
      더 이상 이런 과제는
      내지 말아주세요
      미워할거야…………

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