Continuous DB Changes Delivery With LiquibaseAidas Dragūnas
The short overview of Continuous Delivery process. The overview of Liquibase technology as one of open source technologies, designed for DB changes migration. Live demonstration of how Liquibase could be used in Continuous Delivery process.
This presentation about common problems with data base versioning, migration and maintaining during project live cycle. Also we will look at useful tools that can help us to solve these problems. Then we will compare two most popular tools Liquibase and Flyway , and run live demo with small migration using one of them.
Continuous DB Changes Delivery With LiquibaseAidas Dragūnas
The short overview of Continuous Delivery process. The overview of Liquibase technology as one of open source technologies, designed for DB changes migration. Live demonstration of how Liquibase could be used in Continuous Delivery process.
This presentation about common problems with data base versioning, migration and maintaining during project live cycle. Also we will look at useful tools that can help us to solve these problems. Then we will compare two most popular tools Liquibase and Flyway , and run live demo with small migration using one of them.
Net-a-Porter has embarked on the mission of separating database refactoring from code deployment. The solution we've come up with is "refactoring as a service" and a soon-to-be released Perl module which drives it.
I'll explain how Liquibase, our Git repositories, Puppet and Jenkins all fit together to make database refactoring easy and deployment safe and roll-backable.
I'll also tell you how I just discovered Sqitch as a possible replacement for Liquibase.
... and all within 20 minutes!
This talk will be about managing DB scripts in our projects, from how to choose file structure to how easily manage them with large development team and run on different environments. We will look deep in the most popular tool for DB script migrations – Liquibase. How to write reliable scripts for Liquibase? How to run them everywhere? How to integrate them with Maven or Spring Boot? Answers for all these questions will be in this talk.
Database migrations with Flyway and LiquibaseLars Östling
An agile world of continuous integration and deployment reinforces the need to be able to seamlessly and effortlessly update your database to keep it in sync with the latest changes in your code. Implementing database migrations with Flyway or Liquibase will help you do just that. This presentation gives a quick overview of the two frameworks accompanied by some simple demos.
This presentation is about managing database scripts, why we need to do it from theoretical and practice perspective, how it improves continues integration and delivery process on real projects.
Database Migrations with Gradle and LiquibaseDan Stine
Database migration scripts are a notorious source of difficulty in the software delivery process. This session will discuss how we neutralized this all too common headache.
Now our deployment framework executes database migrations automatically with every application deploy, and the QA team performs self-service full stack deployments in test environments. The resulting additional bandwidth has been invested in more frequent software releases, and the opportunity to focus on higher-value tasks.
Git is a distributed revision control system that is widely used in the software development industry. The presentation was used in a lecture delivered in BITS-Pilani, India. The lecture served as a basic crash course on Git.
First, it sets off with a guide to install and configure git on various platforms.
Then, the basic working concepts of Git are explained.
This is followed by a detailed step-by-step guided demonstration of a sample workflow in Git.
Afterwards, Some auxillary commands that are frequently used are discussed briefly.
Finally, basic concepts of branching and merging are detailed.
The presentation ends with a few possible merge conflicts that occur in Git.
Introduction to Git & GitHub.
Agenda:
- What’s a Version Control System?
- What the heck is Git?
- Some Git commands
- What’s about GitHub?
- Git in Action!
Come Fly With Me: Database Migration Patterns with FlywayJoris Kuipers
If your application is using a relational database, you’ll have to deal with regular schema changes and other database-related changes as part of your development and deploys. Flyway is an OSS Java tool that helps to you reliably and automatically execute database migrations to ensure that your database schema is always up-to-date with respect to your application’s expectations.
This presentation provides a quick introduction to Flyway for people not yet familiar with the tool to then follow up by explaining some more advanced patterns and use cases that Joris developed while using Flyway in different projects.
Topics discussed include:
- migration versioning when using maintenance branches;
- versioning and out-of-order migrations when using feature branches;
- dynamically including different migration locations to support e.g. different DBMSs or production data fixes in addition to regular migrations;
- periodically squashing migrations to prevent the number of migration files from getting out of hand;
- using multiple schema version tables as part of an ongoing monolith to microservices migration.
Net-a-Porter has embarked on the mission of separating database refactoring from code deployment. The solution we've come up with is "refactoring as a service" and a soon-to-be released Perl module which drives it.
I'll explain how Liquibase, our Git repositories, Puppet and Jenkins all fit together to make database refactoring easy and deployment safe and roll-backable.
I'll also tell you how I just discovered Sqitch as a possible replacement for Liquibase.
... and all within 20 minutes!
This talk will be about managing DB scripts in our projects, from how to choose file structure to how easily manage them with large development team and run on different environments. We will look deep in the most popular tool for DB script migrations – Liquibase. How to write reliable scripts for Liquibase? How to run them everywhere? How to integrate them with Maven or Spring Boot? Answers for all these questions will be in this talk.
Database migrations with Flyway and LiquibaseLars Östling
An agile world of continuous integration and deployment reinforces the need to be able to seamlessly and effortlessly update your database to keep it in sync with the latest changes in your code. Implementing database migrations with Flyway or Liquibase will help you do just that. This presentation gives a quick overview of the two frameworks accompanied by some simple demos.
This presentation is about managing database scripts, why we need to do it from theoretical and practice perspective, how it improves continues integration and delivery process on real projects.
Database Migrations with Gradle and LiquibaseDan Stine
Database migration scripts are a notorious source of difficulty in the software delivery process. This session will discuss how we neutralized this all too common headache.
Now our deployment framework executes database migrations automatically with every application deploy, and the QA team performs self-service full stack deployments in test environments. The resulting additional bandwidth has been invested in more frequent software releases, and the opportunity to focus on higher-value tasks.
Git is a distributed revision control system that is widely used in the software development industry. The presentation was used in a lecture delivered in BITS-Pilani, India. The lecture served as a basic crash course on Git.
First, it sets off with a guide to install and configure git on various platforms.
Then, the basic working concepts of Git are explained.
This is followed by a detailed step-by-step guided demonstration of a sample workflow in Git.
Afterwards, Some auxillary commands that are frequently used are discussed briefly.
Finally, basic concepts of branching and merging are detailed.
The presentation ends with a few possible merge conflicts that occur in Git.
Introduction to Git & GitHub.
Agenda:
- What’s a Version Control System?
- What the heck is Git?
- Some Git commands
- What’s about GitHub?
- Git in Action!
Come Fly With Me: Database Migration Patterns with FlywayJoris Kuipers
If your application is using a relational database, you’ll have to deal with regular schema changes and other database-related changes as part of your development and deploys. Flyway is an OSS Java tool that helps to you reliably and automatically execute database migrations to ensure that your database schema is always up-to-date with respect to your application’s expectations.
This presentation provides a quick introduction to Flyway for people not yet familiar with the tool to then follow up by explaining some more advanced patterns and use cases that Joris developed while using Flyway in different projects.
Topics discussed include:
- migration versioning when using maintenance branches;
- versioning and out-of-order migrations when using feature branches;
- dynamically including different migration locations to support e.g. different DBMSs or production data fixes in addition to regular migrations;
- periodically squashing migrations to prevent the number of migration files from getting out of hand;
- using multiple schema version tables as part of an ongoing monolith to microservices migration.
Javaland 2016 - Flyway vs. LiquiBase - Battle der DatenbankmigrationstoolsStephan Kaps
Nach einer Einleitung und Vorstellung der aktuellen Funktionsweise der Tools, werden die zwei bekanntesten OpenSource Tools Flyway und LiquiBase über 6 Runden miteinander verglichen.
Even though widget libraries for GWT exist, it’s sometimes necessary to create a widget on your own. Widget creation will confront you with challenges like GWT specifics or the way browsers work.
Participants will learn how to compose existing widgets as well as creating new ones based on DOM elements. As it is important to know how browsers behave, topics like DOM API, reflows and event propagation will be explained. But there are also GWT specific aspects, like important interfaces and classes or how to prevent code injection.
Liquibase få kontroll på dina databasförändringarSqueed
You never develop code without version control, why do you develop your database without it? With Liquibase, database changes are stored in human XML-files and committed to the source control system. Changes are applied to the developers local databases. As changes are committed they are distributed to all other environments including all developers local databases, test databases, staging databases, and even to production databases. This presentation will introduce you to Liquibase and the topic database change management. We will also present some advanced topics based on real life experience and a few tips and tricks as well
Rikard Thulin, Squeed and Roger Nilsson, Altran
An overview of the latest news and interesting developments across PHP from February 2017: new language features, RFCs, community news, upcoming conferences and the latest versions of popular frameworks and platforms.
SE2016 Java Roman Ugolnikov "Migration and source control for your DB"Inhacking
Event: #SE2016
Stage: Java
Data: 3 of September 2016
Speaker: Roman Ugolnikov
Topic: Migration and source control for your DB
INHACKING site: https://inhacking.com
SE2016 site: http://se2016.inhacking.com/
The current trends to work in Agile and DevOps are challenging for database developers. Source control is a standard for non-database code but it’s a challenge for databases. This talk has an ambition to change that situation and help developers and DBA take over control of source code and data.
Access Data from XPages with the Relational ControlsTeamstudio
Did you know that Domino and XPages allows for the easy access of relational data? These exciting capabilities in the Extension Library can greatly enhance the capability of your applications and allow access to information beyond Domino. Howard and Paul will discuss what you need to get started, what controls allow access to relational data, and the new @Functions available to incorporate relational data in your Server Side JavaScript programming.
Migrating to SharePoint 2013 - Business and Technical PerspectiveJohn Calvert
Many organizations still run versions of SharePoint prior to 2013, but the appetite and pressure to upgrade is increasing as business and IT better understand the new features and capabilities of SharePoint 2013 / Online combined with its sister products Office 2013 and Exchange 2013, or alternately Office 365. Drawing on experience from real client engagements in this presentation we examine the business and technical roadmap, and challenges in planning and executing a migration to SharePoint 2013.
So, you know how to deploy your code, what about your database? This talk will go through deploying your database with LiquiBase and DBDeploy a non-framework based approach to handling migrations of DDL and DML.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
2. why
Data Base migration:
Data base structure:
- Tables, constrains, indexes;
Data base data:
- Initial data like list of post codes,
statuses for order, etc.
Data base logic:
- stored procedures, triggers, functions
3. why
Data Base migration:
Data base structure:
- Tables, constrains, indexes;
Data base data:
- Initial data like list of post codes,
statuses for order, etc.
Data base logic:
- stored procedures, triggers, functions
v1.0.0
4. why
Data Base migration:
Data base structure:
- Tables, constrains, indexes;
Data base data:
- Initial data like list of post codes,
statuses for order, etc.
Data base logic:
- stored procedures, triggers, functions
v1.2.1
v1.0.0
5. why
Data Base migration:
Data base structure:
- Tables, constrains, indexes;
Data base data:
- Initial data like list of post codes,
statuses for order, etc.
Data base logic:
- stored procedures, triggers, functions
v1.2.1
v1.6.0
v1.0.0
6. why
Data Base migration:
Data base structure:
- Tables, constrains, indexes;
Data base data:
- Initial data like list of post codes,
statuses for order, etc.
Data base logic:
- stored procedures, triggers, functions
v1.2.1
v1.6.0
v2.0.1
v1.0.0
7. why
Data Base migration:
Data base structure:
- Tables, constrains, indexes;
Data base data:
- Initial data like list of post codes,
statuses for order, etc.
Data base logic:
- stored procedures, triggers, functions
v1.2.1
v1.6.0
v2.0.1
v1.0.0
9. What
Liquibase :
•Database migration for Java;
•Can be used as
•Ant, Maven or Gradle plugin,
•as CLI tool;
• as part of the system :
•Servlet Listener
•Spring Listener
•JEE CDI Listener
10. how it works
•Supports multiple database types:
MySQL, PostgreSQL, Oracle, MsSql,
Sybase_Enterprise, Sybase_Anywhere , DB2,
Apache_Derby, HSQL, H2, Informix, Firebird,
SQLite
11. how it works
Changes are grouped into changesets:
• Change(s) that should be applied
atomically
Changesets are grouped into
changelogs:
•Files managed in version control
12. how it works
Supports XML, YAML, JSON (DSL for database changes)
and SQL formats:
•Create Table, Add PK, Add FK, Add
Column, Add Index, …
•Drop Table, Drop PK, Drop FK, Drop
Column, Drop Index, …
•Insert, Update, Delete, …
13. how it works
•Changeslog (XML):
<databaseChangeLog xmlns=…>
<changeSet author="liquibase-docs“
id="addColumn-example">
<addColumn catalogName="cat“
schemaName="public"
tableName="person">
<column name="address"
type="varchar(255)"/> </addColumn>
</changeSet>
<changeSet> ….</changeset>
<changeSet> ….</changeset>
</databaseChangeLog>
14. how it works
•Changeslog (YAML):
databaseChangeLog:
changeSet:
id: addColumn-example
author: liquibase-docs
changes:
- addColumn:
catalogName: cat
columns:
- column:
name: address
type: varchar(255)
schemaName: public
tableName: person
16. how it works
- Changesets uniquely identified by [Author, ID, File path]
- Liquibase tracks changeset execution in a special table
- Lock table to prevent concurrent Liquibase invocations
- Modified changesets are detected via checksums
24. how it works
Spring config (embedded in your
application):
<dependency>
<groupId>org.liquibase</groupId>
<artifactId>liquibase-core</artifactId>
<version>${liquibase.version}</version>
</dependency>
<bean id="liquibase" class="liquibase.integration.spring.SpringLiquibase">
<property name="dataSource" ref="myDataSource" />
<property name="changeLog" value="classpath:db-changelog.xml" />
<!-- contexts specifies the runtime contexts to use. -->
<property name="contexts" value="test, production" />
</bean>
25. how it works
Spring Boot config (embedded in your
application ):
<dependency>
<groupId>org.liquibase</groupId>
<artifactId>liquibase-core</artifactId>
<version>${liquibase.version}</version>
</dependency>
none
https://github.com/spring-projects/spring-boot/tree/master/spring-boot-samples/spring-boot-sample-liquibase
26. how it works
•Also:
<changeSet id="4" dbms="oracle">
<sqlFile path="5.sql"/>
</changeSet>
<changeSet id="5" context="test">
<sqlFile path="5.sql"/>
</changeSet>
<changeSet id="6" failOnError="false">
<sqlFile path="6.sql"/>
</changeSet>
27. how it works
•Also:
<preConditions>
<dbms type="oracle" />
<runningAs username="SYSTEM" />
</preConditions>
<changeSet id="1" author="bob">
<preConditions onFail="WARN">
<sqlCheck expectedResult="0">
select count(*) from oldtable
</sqlCheck>
</preConditions>
<comment>Comments should go after preCondition. If they are before then
liquibase usually gives error.</comment>
<dropTable tableName="oldtable"/>
</changeSet>
28. recommendations
• it is better to have each change in separate changes ;
• Document changesets with <comment> tag;
• Folders structure should reflect migration structure
com
example
db
changelog
db.changelog-master.xml
db.changelog-1.0.xml
db.changelog-1.1.xml
db.changelog-2.0.xml
29. peculiarities
•if you do roll back, Liquibase deletes the log line about the update from
databasechangelog table, and after that Liguibase does not know any more
that this change was applied and reverted;
•all changes are applied sequentially, so we can not apply/rollback
separate mediate changes;
•no straightforward way of customizing warn/error messages;
30. peculiarities
•Each change set has an “id” and “author” attribute which, along with the directory
and file name of the the change log file, uniquely identifies it. Dark side of it is that
running the same change set using relative and absolute path will be considered
as different changesets!
For example we have file /home/user/changelog-0.1.0.xml
First we execute:
$ liquibase --changeLogFile=/home/user/changelog-0.1.0.xml
and then if we try to execute
$ liquibase --changeLogFile=changelog-0.1.0.xml