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C# is a general-purpose, object-oriented programming language developed by Microsoft. It is used to develop a variety of applications, including web, mobile, desktop, and gaming applications. C# is based on the C and C++ programming languages, and it is designed to be simple, powerful, and type-safe. It supports both procedural and object-oriented programming paradigms, and it is used to create applications for the .NET framework. C# is a versatile language that can be used to create a wide range of applications.

Ruby is an open-source, object-oriented programming language created by Yukihiro Matsumoto in 1995. It is designed to be simple and easy to use, yet powerful and flexible. Ruby is often used for web development, scripting, and general-purpose programming. It is known for its use of blocks, which allow for the creation of concise and powerful code. Ruby is also popular for its use of metaprogramming, which allows for the dynamic creation of code at runtime.

SQL (Structured Query Language) is a domain-specific language used in programming and designed for managing data held in a relational database management system (RDBMS). It is used to perform tasks such as retrieving, updating, inserting, and deleting data from a database. SQL is also used to create and modify database structures, such as tables, views, and stored procedures. It is a powerful language that can be used to query, analyze, and manipulate data.

SQLite is a lightweight, self-contained, serverless, zero-configuration, transactional SQL database engine. It is the most widely deployed database in the world with over 1 trillion installations. It is used in countless applications, from web browsers to operating systems. It is fast, reliable, and requires minimal setup and maintenance. It supports most of the SQL standard, including transactions, triggers, and views. It is also highly extensible, allowing developers to create custom functions and extensions.

macOS is Apple’s Unix‐based desktop operating system, first released in 2001 as Mac OS X and built on the open‐source Darwin core and the proprietary XNU kernel. Designed exclusively for Mac computers, it combines a polished Aqua graphical interface with deep integration of hardware and software, offering features like Spotlight search, Time Machine backups, and Continuity for seamless work across Apple devices. With strong emphasis on stability, security and performance, macOS supports a rich ecosystem of native and third-party applications via the Mac App Store and developer tools such as Xcode, making it a popular choice for both creative professionals and everyday users.

Windows is a series of operating systems developed by Microsoft. It is the most popular operating system for personal computers, and is used in a variety of devices, including desktop and laptop computers, tablets, and smartphones. Windows provides a graphical user interface, allowing users to interact with their computer using a mouse and keyboard. It also includes a range of applications, such as web browsers, media players, and office suites. Windows also includes a range of security features, such as user accounts, firewalls, and antivirus software.

Technical Lead for Resource Data, Inc. (RDI), a consultancy specializing in custom database, web, and GIS programming services