Finding External References in Database Deployments

This article outlines the syntax of the three and four dot references that usually denote external database references, demonstrates how to find them either from a live database or by using a text search of a script, and explains some of the complicating factors that can lead to 'false positives'. Read more

Database Branching and Merging without the Tears

Armed with a schema comparison engine and an object-level directory of the source for every recent version of the database, you'll be able to remove a lot of the uncertainty around merging database changes back into development. Read more

Working with Flyway And Entity Framework Code First: An Overview

This article presents an approach to database development and deployment that combines the strengths of Entry Framework Code First for .NET-driven development with the control and database versioning provided by Flyway's SQL migrations. It allows every database change to be reviewed and tested for integrity, performance, and stability in the same way as any application change. It should make a Database CI process much easier to sustain. Read more

How to Automate Cross-Platform Database Development

In order to focus on their primary task of developing databases, the development team need to automate as many as possible of the routine tasks that are essential for database delivery, such as testing, scripting, version control, documentation, code review, reporting and so on. This article gives some advice on how to do it, faced with the added challenge of needing to use several different relational databases. Read more

Automatically Tracking and Deploying Static Data in Flyway Enterprise

Static data is often required for the basic functioning of a database and any dependent applications. Therefore, it's vital that we can track this static data to understand how, when, and why it changed, and that we include any static data changes in our database deployments. Flyway Enterprise will now do both tasks automatically. Read more

Piping, Filtering and Using Flyway Output in PowerShell

Flyway's output is often overwhelmed with verbose messages, most of which we can ignore but some of which provide vital warnings about failed compilations, or useful details about what a migration or callback did. I'll show how to use some pipeline-aware PowerShell functions to filter out and save the bits we want and pass the results along in a form that is useful to the next process in the pipeline. Read more

Recording What’s Changed when Running Oracle Migrations with Flyway

This article uses Flyway and a PowerShell framework to generate a simple JSON model for each new version of an Oracle database, and then compares models to get a high-level 'narrative' of which tables, views or procedures were changed by each Flyway migration. Read more

Complex Production Database Deployments and Flyway

This article explains how, by use of schemas and stub interfaces, we can use Flyway to manage the main development work smoothly alongside any changes or additions required to maintain production-only code. It also demonstrates how this mechanism enables Flyway to manage a 'mock' or 'dummy' variant of a production schema, in development, so that the team can still develop and test code that, when deployed, will access production-only features. Read more

Undoing Actions on Groups of Database Tables

During development you'll occasionally need an undo script that drops a group of tables, or you might need to truncate a group of tables and then insert fresh data in order to run some tests. Unless you perform the required actions in the correct dependency order, you'll be tripped up by foreign key constraint violations. This article provides a SQL function that returns the list of tables in the correct dependency order. Read more

Getting Started with Flyway Migrations on Oracle

A quick demonstration of using Flyway with Oracle, for those of a nervous disposition. We'll use Flyway to run some migrations on an Oracle Autonomous Database, building the initial version of the database then filling it with development data. Read more

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