Articles tagged DLM_ebook

A DLM Approach to Database Testing

Database Lifecycle Management aims to make the development and modification of databases more predictable. Bugs are the source of more unpredictability than anything else, purely because it is so difficult to guess how long it will take to fix them. Good testing at all stages may take some time and effort, but it greatly reduces likelihood of the wildcard factor of the bug that is first detected during the deployment process; or worse, that gets into the production release.… Read more

Planning for Successful Data Management

It is the data, in particular, that sets Database Lifecycle Management apart from the mainstream of application delivery. Data entities, and the way that organisations understand and deal with them, have their own lifespan. If we neglect the management of data, we risk disaster for the organisations that use it. If we take data management seriously, databases become a lot easier. … Read more

DevOps and Database Lifecycle Management

Database Lifecycle Management (DLM) aims to provide a roadmap of what is required, and when, to deliver and maintain effective databases that can respond quickly to business change. How does the DevOps movement, as it applies to databases, fit into this? William Brewer explains how DevOps provides the organisational change between delivery and operations to make important parts of the process easier to introduce.… Read more

Planning for a Successful Database Lifecycle

Although it is well-known that the best efforts of a development team can be derailed by mistakes in the architecture, design and general governance of a development project, few attempts have been made to describe what needs to be done to increase the chances of success in the development of a database application. William Brewer steps into the breach to itemise what a delivery team needs to succeed.… Read more

Database Version Control

By placing under source control everything we need to describe any version of a database, we make it much easier to achieve consistent database builds and releases, to find out who made which changes and why, and to access all database support materials. Matthew Skelton explains how to make sure your version control system fully supports all phases of the database lifecycle, from governance, development, delivery and through to operations.… Read more

Database Lifecycle Management for ETL Systems

Few databases are self-contained. They take data from other sources, and publish them to downstream consumers of data. These ETL processes tend to grow in an unplanned organic way and so tand to cause trouble both in production and in deployment. Database Lifecycle Management systems allow all the teams to come together to ensure that ETL systems meet all requirements.… Read more

Database Migrations: Modifying Existing Databases

It should be simple to upgrade a database to a new version. It certainly can be, but if you need to preserve the existing data and you have made changes to the design to the tables then it can get complicated. If you are deploying changes to a heavily-used OLTP system on which an organization depends, then you need to understand, and be familiar with, the issues that can effect a database migration. Matthew Skelton explains the basic approaches.… Read more

Issue Tracking for Databases

Any database development project will be hard to manage without a system for reporting bugs in the code, anomalies and incidents from live environments, and for keeping track of new features. Matthew Skelton discusses the critical role of an integrated issue tracking system in database lifecycle management.… Read more

Better Ways to Build a Database

The purpose of a database build is simple: prove that what you have in version control can successfully create a working database. And yet many teams struggle with unreliable and untested database build processes that slow down deployments and prevent the delivery of new functionality. Grant Fritchey explains how to achieve an automated and reliable database build that is only as complex as the database system it needs to create.… Read more

Database Continuous Integration

Have you ever longed for a way of making the delivery of databases more visible, predictable and measurable? Do you ever wish that they would be of better quality, quicker to change, and cost less? Grant Fritchey explains some of the secrets of doing Continuous Integration for Databases to relieve some of the pain-points of the Database Delivery process.… Read more

What is Database Lifecycle Management (DLM)?

When the different teams that are involved throughout the life of a database fail to reconcile their different roles and priorities, and so fail to cooperate, or work adaptively, the result is gridlock: databases defined as though carved in stone rather than by code and data. DLM offers an alternative that allows databases to respond quickly to business change.… Read more