1. 0
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    1. 2
      Thread opened Database Systems 8 months ago
      jessicaruby
      No title
      MindMajix is the globally professional in IT courses training which emphasize on hands-on experience with examples from real-time scenarios by experts. About Course: Data Science is a process of extracting knowledge from data. Data science is emerging...

      MindMajix is the globally professional in IT courses training which emphasize on hands-on experience with examples from real-time scenarios by experts.

      About Course:

      Data Science is a process of extracting knowledge from data. Data science is emerging to meet the challenges of processing large data sets which require versatile skill set and specialized in specific domain. Data scientist analyse the complex problems and ensures rich consistency of data sets by creating visualizations to aid in understanding data. Data science training is designed to teach the techniques of data mining and gain knowledge on the insight of visualization and optimization of data to become a successful Data Scientist.

      Course Curriculum:

      Introduction to Data Science

      Basic Data Manipulation using R in Data Science

      Machine Learing Techniques Using R Part-1

      Machine Learning Techniques Using R Part-2

      Data Science Machine Learning Techniques Using R Part-3

      Introduction to Hadoop Architecture

      Integrating R with Hadoop

      Data Science Mahout Introduction and Algorithm Implementation

      Additional Mahout Algorithms and Parallel Processing Using R

      . Project

      Key Features:

      Flexible Timings

      Certified & Industry Experts Trainers

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      We provide quality online Data science training by real time faculty and well trained software specialists. We also present course material on each and every topic which would be easy for the participant to refer.

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      1. 2
        ClickHouse is a columnar DBMS for OLAP.In a "normal" row-oriented DBMS, data is stored in this order:5123456789123456789 1 Eurobasket - Greece - Bosnia and Herzegovina - example.com 1 2011-09-01 01:03:02 6274717 1294101174...

        ClickHouse is a columnar DBMS for OLAP.

        In a "normal" row-oriented DBMS, data is stored in this order:

        5123456789123456789     1       Eurobasket - Greece - Bosnia and Herzegovina - example.com      1       2011-09-01 01:03:02     6274717   1294101174      11409   612345678912345678      0       33      6       http://www.example.com/basketball/team/123/match/456789.html http://www.example.com/basketball/team/123/match/987654.html       0       1366    768     32      10      3183      0       0       13      0\0     1       1       0       0                       2011142 -1      0               0       01321     613     660     2011-09-01 08:01:17     0       0       0       0       utf-8   1466    0       0       0       5678901234567890123               277789954       0       0       0       0       0
        5234985259563631958     0       Consulting, Tax assessment, Accounting, Law       1       2011-09-01 01:03:02     6320881   2111222333      213     6458937489576391093     0       3       2       http://www.example.ru/         0       800     600       16      10      2       153.1   0       0       10      63      1       1       0       0                       2111678 000       0       588     368     240     2011-09-01 01:03:17     4       0       60310   0       windows-1251    1466    0       000               778899001       0       0       0       0       0
        ...

        In other words, all the values related to a row are stored next to each other. Examples of a row-oriented DBMS are MySQL, Postgres, MS SQL Server, and others.

        In a column-oriented DBMS, data is stored like this:

        WatchID:    5385521489354350662     5385521490329509958     5385521489953706054     5385521490476781638     5385521490583269446     5385521490218868806     5385521491437850694   5385521491090174022      5385521490792669254     5385521490420695110     5385521491532181574     5385521491559694406     5385521491459625030     5385521492275175494   5385521492781318214      5385521492710027334     5385521492955615302     5385521493708759110     5385521494506434630     5385521493104611398
        JavaEnable: 1       0       1       0       0       0       1       0       1       1       1       1       1       1       0       1       0       0       1       1
        Title:      Yandex  Announcements - Investor Relations - Yandex     Yandex — Contact us — Moscow    Yandex — Mission        Ru      Yandex — History — History of Yandex    Yandex Financial Releases - Investor Relations - Yandex Yandex — Locations      Yandex Board of Directors - Corporate Governance - Yandex       Yandex — Technologies
        GoodEvent:  1       1       1       1       1       1       1       1       1       1       1       1       1       1       1       1       1       1       1       1
        EventTime:  2016-05-18 05:19:20     2016-05-18 08:10:20     2016-05-18 07:38:00     2016-05-18 01:13:08     2016-05-18 00:04:06     2016-05-18 04:21:30     2016-05-18 00:34:16     2016-05-18 07:35:49     2016-05-18 11:41:59     2016-05-18 01:13:32
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        About This Board
        A database is an organized collection of data. It is the collection of schemas, tables, queries, reports, views and other objects. The data are typically organized to model aspects of reality in a way that supports processes requiring information, such as...
        A database is an organized collection of data. It is the collection of schemas, tables, queries, reports, views and other objects. The data are typically organized to model aspects of reality in a way that supports processes requiring information, such as modelling the availability of rooms in hotels in a way that supports finding a hotel with vacancies.