When working with databases, we often encounter rows that lack data. This missing data may result from unknown or inapplicable values, errors during data import or input, or specific calculations involving non-existent values. In such cases, there are two ways to represent missing data: NULLs and empty (or blank) values. While these might seem identical at first glance, they are different and impact essential database operations in distinct ways.

This article will be useful for those who have already installed PostgreSQL on personal computers. In case you still haven’t, this blog post will come in handy. Now, we will focus on the most popular ways of accessing the PostgreSQL database on Windows. We will describe the PostgreSQL connection options using psql, pgAdmin, and fast and convenient dbForge Studio for PostgreSQL by Devart. Moreover, here you will find the instructions on connecting to local and remote PostgreSQL servers.

MySQL is one of the world’s most favored database management systems, as it is powerful, open-source, and easy to configure. It is one of the common choices for startups as well as small and medium-sized business projects. However, as workloads grow and become more complex, the need for more robust solutions arises. Here, MySQL HeatWave stands out as a promising managed database platform for evolving challenges. This article will examine MySQL HeatWave, its features, capabilities, and use cases.

We’ve got another big update! This time it’s all about PostgreSQL; the entire product line has been polished and augmented to make your experience with PostgreSQL fuller in every way—this includes new data sources, improved suggestions, a slew of new smart data generators, and quite a few other tricks to make your daily work easy as ever. Without further ado, let’s check everything feature by feature!

Here comes the long-awaited release of three new Python Connectors for Dynamics 365 Business Central, Excel Online, and Google Sheets. These Connectors are designed to simplify data integration and maximize productivity for developers working with these platforms. From now on, it will be extremely easy to connect Python applications directly to Dynamics 365 Business Central, Excel Online, and Google Sheets, enabling accurate create, read, update, and delete operations on stored data.

When working with MySQL databases, you may encounter the need to change a database name. However, MySQL no longer supports a direct renaming option. The RENAME DATABASE command, available in earlier versions, was removed due to the risk of data loss. Despite this, renaming a database in MySQL is still possible. This article explores the available methods to accomplish this task safely and effectively.

Ad-hoc queries are temporary SQL queries created and executed to perform a specific task without prior preparation or to save as permanent procedures or functions. Usually, they can be used to analyze data, search for particular information, or solve temporary tasks. However, if user-defined input data generates the text in ad-hoc queries dynamically, they may be vulnerable to SQL injections. In the article, we’ll explore what ad-hoc queries are and what security and access risks they may cause.

ODAC for Delphi is a comprehensive set of components that allows Delphi developers to integrate Oracle database connectivity into their applications without too much hassle. In this article, we will explore how to install ODAC, its advantages, and some of its key features.

Imagine you’re working in a UNIX-based environment, managing multiple databases like MariaDB, PostgreSQL, or Oracle, and you have to connect their data to different applications. Without UNIX ODBC drivers, you’d have to write custom code for each database, which would quickly turn into a nightmare — each database has its own way of handling queries, connections, and authentication. Luckily, ODBC drivers can save the day by acting as “translators”.

Components in Delphi save the essential time it often takes for developers to write code from scratch, providing pre-built options you can continuously reuse to assemble software, create a smooth user interface, and handle complex data connectivity tasks. Streamlined development, reduced number of errors, and consistency are only some of the advantages that you get when using components while you work with Delphi.