Infrastructure at your Service
By Franck Pachot What I want to show in this blog post is that, as in mathematics where you have to apply some algebra rules to transform an equation to an equivalent one, the database developer must translate the business specification to an equivalent that is optimized (in performance, reliability and readability) for the data model. I was looking at the Sakila sample database provided with MySQL. It simulates a DVD rental store. For my…
As I discussed in some of my recent talks at conferences (at the DOAG for example), MySQL 8 came out with new features which bring lots of improvements in terms of security.
Each year, since the company creation in 2010, dbi services attends the DOAG conference in Nürnberg. Since 2013 we even have a booth. The primary goal of participating to the DOAG Conference, is to get an overview about the main trends in the Oracle business. Furthermore, this conference and our booth allow us to welcome our Swiss and German customers and thank them for their trust. They’re always pleased to receive some nice Swiss Chocolate…
For this last day (25.10.2018) at Oracle Open World my first technical session was “Replication what’s new in MySQL 8“. This session was given by Nuno Carvalho – Oracle MySQL Principal Software Engineer, Vitor Oliveira – Oracle MySQL Performance Architect, Louis Soares – Oracle MySQL Software Development Director. You can find the list of new features linked with MySQL InnoDB Cluster here. They introduced the session with the challenges a database has to face today: We…
As a former MySQL Consultant during this second day (24.10.2018) I couldn’t miss a session given by Peter Zaitsev founder of Percona and assuming the role of CEO. This session named MySQL 8 Field Report is a kind of summary of all new features encapsulated in MySQL 8. During the first slides, Peter presented performance related to utf8mb4 since it’s the default characterset in version 8. These slides had an Oracle logo on the botom that why…
Yesterday (22.10.2018) I participated to the Janis Griffin’s session about “Top Five Query Tuning Tips” at #OOW2018. Janis is Senior DBA /Performance Evangelist for SolarWinds and Ace Director. She is specialized in Performance Tuning. She introduces her session by speaking about Challenges of Tuning. “Tuning takes time.”, “You cannot give enough power if SQL is ineficient”, “You therefore have to monitor wait time”. It sounds basic telling that it doesn’t worth adding CPU or memory when…
We hear about Docker every day. By working on MySQL Server, I am curious to test this platform which makes it possible to create containers independent of the OS to deploy virtualized applications. So let’s try to deploy a MySQL Server with Docker!
By Franck Pachot . You may wonder what I’m doing with those technologies that are completely different from what I usually do. I’ll detail in a future blog post but the idea is giving a short introduction to databases to students at https://powercoders.org/, a coding academy for refugees in Switzerland. They install MAMP (My Apache – MySQL – PHP) during their curriculum for website development, and then I’ll use this environment to teach data modeling…
By Franck Pachot . If you want to play with OpenShift on your laptop, you can, in a Virtual Machine. I have VirtualBox installed on my laptop. I’ll install Minishift here, which will create the VM to run OpenShift with few simple commands only. On Linux you can refer to Daniel’s post. Here is the Windows version. Oh, and Daniel did that to run Postgres but my goal is to run an Oracle container of…
As you know, foreign keys establish a sort of relationship between 2 tables. MySQL requires InnoDB storage engine to support foreign keys. In our example, we have the following parent table in a MySQL 5.7.21 server: mysqld3-([email protected]) [sakila]> show create table actor\G *************************** 1. row *************************** Table: actor Create Table: CREATE TABLE `actor` ( `actor_id` smallint(5) unsigned NOT NULL AUTO_INCREMENT, `first_name` varchar(45) NOT NULL, `last_name` varchar(45) NOT NULL, `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON…
