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DekarLab

Blog about big data processing and data-driven investments

  • DATA PROCESSING
  • INVESTMENTS
  • MONEY BUILDER
  • INDEX TRACKING (ETF)
  • PDI/R PLUGIN
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DekarLab

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Raw, clean, and derived data in data lakes based on HDFS

3. June 2017 karden DATA PROCESSING

You may think, that there is no need to structure data in HDFS. You can systemize it in the future. But I think this is a wrong way. We should always keep in mind: there is no free lunch. Therefore it is better to make desicions at the beginning.

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Post Views: 920

Thoughts about schema-on-write and schema-on-read

2. June 2017 karden DATA PROCESSING

There are two approcahes, which we can select for designing storage of the data. They are schema-on-read and schema-on-write.

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Post Views: 509

How to integrate Apache Kylin OLAP In Excel (pivot) [XMLA Connect and Mondrian]

21. May 2017 karden DATA PROCESSING

Apache Kylin is very powerfull OLAP engine. It supports ODBC driver to move the data in excel, however this driver is not user friendly. Users should wright sql queries for this.

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Post Views: 3,291

Short note about HDFS or why you need distributed file system

21. May 2017 karden DATA PROCESSING

Why do you need HDFS (Hadoop Distributed Files System)? If the amount of data is small and place on your computer is enough for this, then you do not need distributed file system. But if you like to process a large amount of data, which is not possible to save on one computer, then you need to think about distributed file system.

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Post Views: 388

Documenting your investment decisions in MoneyBuilder

12. January 2017 karden INVESTMENTS, MONEY BUILDER

Before you start the investment you need to document two very important points.

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Post Views: 440

Source code for MoneyBuilder is available

6. July 2016 karden INVESTMENTS, MONEY BUILDER

The source code for the application is available in
GitHub.

You can post issues in github if you have any problems.

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Post Views: 409

First steps with MoneyBuilder

14. May 2016 karden INVESTMENTS, MONEY BUILDER

You have downloaded the application and you would like to start book keeping.
How to start?
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Post Views: 507

First version of MoneyBuilder is available

7. May 2016 karden INVESTMENTS, MONEY BUILDER

The first version of MoneyBuilder is available.

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Post Views: 347

Easy Master Data Management with XMDM

10. October 2015 karden DATA PROCESSING

You can download here the new software for master data management.

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Post Views: 378

Informatica Powecenter Fix (Multiple Monitors) without Admin Rights

21. September 2015 karden MISC

Informatica Powercenter has a small issue, when working with multiple screens.
The Dialogs for Expressions and SQLs are not displayed correctly:

Incorrect Dialog

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Post Views: 670

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