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Twineworks
We’re a Berlin-based company specializing in data transformation and analytics. We’re making Tweakstreet, a data processing tool. Here’s where we share our stories.
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Performance-Tuning Database Steps
Performance-Tuning Database Steps
How to correctly use the cache and Bloom filter.
Slawomir Chodnicki
Nov 27, 2019
How I managed to stop my iMac 2011 from becoming obsolete
How I managed to stop my iMac 2011 from becoming obsolete
Apple gave up on it, so I put Windows 10 on it
Slawomir Chodnicki
Nov 13, 2019
Loading the HHAR CSV data set into a SQL database Part 2: activity data
Loading the HHAR CSV data set into a SQL database Part 2: activity data
This is the second part of a two-part series about loading the HHAR CSV data set into a SQL database using Tweakstreet.
Slawomir Chodnicki
Nov 9, 2019
Immediate Feedback in ETL Design
Immediate Feedback in ETL Design
When developing data pipelines, we put together a series of processing steps, lookups, computations, etc. in order to re-shape source data…
Slawomir Chodnicki
Nov 4, 2019
Loading the HHAR CSV data set into a SQL database Part 1: the still data
Loading the HHAR CSV data set into a SQL database Part 1: the still data
In this post I’ll demonstrate how to load the Heterogeneity Activity Recognition CSV data set into a SQL database.
Slawomir Chodnicki
Nov 2, 2019
Importing JSON into a SQL database
Importing JSON into a SQL database
In this article, I am going to demonstrate how to load JSON data into a relational schema. I’ll be using random user data, as generated by…
Slawomir Chodnicki
Oct 28, 2019
Building a simple Star Schema with Tweakstreet
Building a simple Star Schema with Tweakstreet
When building analytics on top of a relational datbase like Postgres, MySQL, Sql Server or Oracle, star schemas can be useful at various…
Slawomir Chodnicki
Oct 26, 2019
Data Processing
Tweakstreet: ‘Can Do’ Data Processing
Tweakstreet: ‘Can Do’ Data Processing
At Twineworks, we are devloping tweakstreet, a next-generation data processing tool.
Slawomir Chodnicki
Oct 21, 2019
To code, to ETL, or to SQL?
To code, to ETL, or to SQL?
Whether you’re wrangling data to perform one-off analysis, ingesting data into a data-lake, or building a data warehouse of some sort — all…
Slawomir Chodnicki
Dec 5, 2017
On entry points for ETL projects
On entry points for ETL projects
ETL solutions tend to be opaque to the operators running them. Any non-trivial ETL solution has multiple things it can potentially do…
Slawomir Chodnicki
Sep 27, 2017
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