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Joe Celko

The DRI Subject of References

A database must be able to maintain and enforce the business rules and relationships in data in order to maintain the data model. It does this through referential constraints. They aren't complex, but are powerful, especially with the means to attach DRI actions to them. Joe Celko explains all, and pines for the ANSI CREATE ASSERTION statement Read more...

William Brewer

IT Compliance and Software Development

What is IT Compliance and is it really necessary for contemporary Agile applications to be constrained by the requirements of compliance? William Brewer argues that if the objective is rapid delivery of applications, then compliance controls must be understood as early as possible in development. Read more...

Richard Morris

Conrad Wolfram: Geek of the Week

Conrad Wolfram is the 'younger Wolfram' of Wolfram Research, the company behind Wolfram|Alpha and Mathematica. He wants to transform the way in which we engage with mathematics. In particular, he would like to reform mathematics education to make greater use of information technology, and he is also leading the way with interactive publishing technology. Read more...

Dennes Torres

Checking the Plan Cache Warnings for a SQL Server Database

How often do you check your query plans to see if they contain any warnings? If you're missing them, it means that you're not getting all those hints about missing indexes, join predicates or statistics. Is the query optimiser trying to tell you about implicit conversions? Dennes shows how to view the warnings in plan cache for a particular database using SQL Read more...

Robert Sheldon

Application Containers For Cloud Computing

Containers promise to make applications more portable and efficient. The technology, originally based on Linux's cgroups, provides a way of running several applications as modular, platform-agnostic packages in isolation on the same server. Docker's open-source approach to containers has dominated the market, and Microsoft is producing its own equivalent Windows system. What next? Will Containers replace VMS? Robert Sheldon investigates. Read more...

Dino Esposito

Quick and Dirty Web Data-Binding

Sometimes, the sheer byzantine complexity of the typical JavaScript frameworks underlying a typical web application can give you pause for thought. If all you need is a simple way of creating a mobile-first application that involves creating simple markup templates, loading them into a DOM fragment and dynamically populating them with JSON data, then maybe a lean micro-framework like Mustache.JS would provide a better, leaner approach. Read more...

Michael K Campbell

The Importance of Caching

Performance tuning and optimization definitely have their place in minimizing SQL Server Licensing costs – by helping keep CPU utilization low. But it’s important to remember that the fastest and most efficient query possible is the one that you never execute against your SQL Server. That might sound trite, but it’s at the heart of caching – which is key to helping organizations save significant money on SQL Server licensing costs while simultaneously enabling better application performance and increased scalability. Read more...

Tony Davis

Questions About SQL Server Transaction Log You Were Too Shy To Ask

You can give a deep-dive presentation about SQL Server's transaction log, and round it off by inviting questions. Your audience will stare awkwardly at their boots. Afterwards, to your surprise there will be a queue of questioners, and the questions are the ones they were too shy to ask out loud. Tony Davis answers these apparently simple, yet tricky questions. Read more...

Feodor Georgiev

Curing Data-Obesity in OLTP Databases

OLTP databases work best when data that becomes no longer current is then transferred to a separate database for analysis and reporting. There are many ways to do this, but Feodor describes a rapid technique that takes advantage of partitions to automates the rotation of the data and moving it to the analysis server. Read more...

Mike Wood

Cloud Storage Replication Is Not Backup

The options that you need to select when setting up an Azure Storage service account allow you to specify the durability and high-availability of your data, but they don't provide for data recovery to a point-in-time. In fact, it means that some of the bad things that can happen to data are more efficiently replicated to all copies. Backup is quite a separate issue. Read more...

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