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COVID-19 pandemic has radically changed the way companies work around the world. To avoid infection, all Pretius employees have been working remotely for half a year now. Even though, as a technology company, we have no significant problems with working …

Dealing with the pandemic with Google Cloud – office activity monitoring Read More »


On 30th Sept 2020 Pretius experts took part in AWS Migration GameDay. The online event run by AWS Poland is a team-based learning exercise where participants compete with each other. A winning team has to migrate a live e-commerce system …

Migration of e-commerce service to AWS in one day Read More »

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Many tutorials can guide an image recognition newbie to training a Haar cascade classifier, particularly the OpenCV official tutorial, Harrison’s Haar Cascade Object Detection Face & Eye OpenCV Python Tutorial, and Creating your own Haar Cascade OpenCV Python Tutorial. Once …

Haar Cascade and false positives – choose your training data well Read More »


Mam Zdanie is an online service supporting open social consultations created by Stocznia. The application was developed in Oracle APEX. In order to reduce the cost of hosting and maintenance related to on-premises infrastructure, Pretius has moved the whole workload …

Benefits of migration of Oracle APEX applications to AWS Read More »

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Introduction The novel coronavirus, named SARS-CoV-2, has been spreading throughout the world for several months now. It emerged in China, most likely in December 2019. After just 4 months it is now (April 2020) infecting people in most countries in …

Coronavirus simulation – how do we slow the virus down? Read More »


Cloud computing brings many benefits to companies. It increases staff productivity by reducing tasks connected to on-premises infrastructure maintenance. It makes it easier to provide secure and highly available services. In addition, a wide range of varied and quickly accessible …

Cloud cost optimization in 6 steps Read More »

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This article contains technical information, problems I encountered during the creation of my personal Google Assistant and their solutions. Despite the vast amount of documentation freely available from Google, there isn’t a clear path on how to connect your bot …

Integration of Google Assistant with Oracle APEX and Oracle DB. Part 2 Read More »

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Nowadays, chatbots are becoming more and more popular, and allow for more significant interaction with users. But is it possible to combine Google Assistant with an Oracle database, and integrate it with APEX?  Imagine that you are a sales representative, …

Integration of Google Assistant with Oracle APEX and Oracle DB. Part 1 Read More »

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When we are working on projects for our clients, we often face the problem of database schema migration. In the previous article, I answered the basic questions about the migration problem. I presented capabilities of the Gradle and Flyway tools …

Gradle, Flyway & Oracle APEX – a few words about migration. Part 2 Read More »

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When we are working on projects for our clients, we often face the problem of database schema migration. This is not a simple task. Each time we have to answer the same questions: In which script are the changes implemented …

Gradle, Flyway & Oracle APEX – a few words about migration. Part 1 Read More »

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