This is a guest post for Integrate.io written by Bill Inmon, an American computer scientist recognized as the "father of the data warehouse." Inmon wrote the first book and first magazine column about data warehousing, held the first conference about this topic, and was the first person to teach data warehousing classes. Five things to know about this topic.

Data integration can be a daunting task, and data engineers usually prefer open-source ETL solutions because of their transparency (you can always inspect the code), flexibility (tinker with the tool), and price performance (no vendor licenses, no maintenance fees). But there are many “gotchas!” with open-source tools you need to consider before picking the best tool for the job.

The past two decades have seen enterprise IT emerge and grow, bringing many innovative technologies into the workplace. Every year that passes promises IT system upgrades rendering some systems and programs obsolete much sooner than in tech’s early days. Yet some older hardware and software remain in use. These outdated systems, known as legacy systems, put companies at a huge disadvantage compared with competitors embracing modern technology.

In Golang, the WithMessage() method allows you to annotate errors with an additional message. Often, error values by themselves don’t give enough context to be useful in debugging. Take, for example, Golang’s basic error handling technique: In Golang, errors are treated as values, so err contains the error value. In this situation, a developer could make use of the error package to add context to the code along with the failure path without destroying the original value of the error.

The PHP strpos($haystack, $needle, $offset) function is used to find the numeric position of the first occurrence of a substring in a string. The haystack parameter is the string to search in, and needle is the substring being searched for. The E_WARNING: strpos(): Empty needle warning is issued if the needle substring is empty when calling the strpos() function.

You can test the software under normal conditions, and that will tell you a lot about what it can and can’t do. What you need to know, though, is how robust that software is. How can it handle intense conditions? How does it cope with error handling? Essentially, you’re testing the software by pushing it beyond its limits, to see exactly when it breaks. That’s information that you need to have, as you’ll then see just how far you can push the software when using it.

In software testing lifecycle, you’d come across two of the most common terms: test cases and test scenarios. After all, these are the building blocks of testing. Getting them right is critical to product success. Test scenarios are derived from a use case, whereas a test case is derived from a test scenario. Using both, we ensure software quality and robustness. Bit tricky, right?

Test plans and test strategies are part of any comprehensive and effective software QA system. While both often work in tandem and are complementary to one another, they represent different goals. But what’s the difference between them? This common confusion arises due to the fact that there is some overlap when it comes to their usage. This blog post discusses the difference between test strategy vs test plan.

A hands-on guide to help you to get started with Appium 2.0, the new features, and how to install and use it locally or on Bitrise.

Business monitoring is essential to a company’s success. Whether you’re improving efficiency, saving costs, planning inventory, or tracking goals, you need to define metrics and monitor them regularly to make progress. With ThoughtSpot, business monitoring is an intuitive experience that starts with visualizing your KPIs in real-time so you can take action when there’s movement.