Learn PostgreSQL Offline vs Learn R Programming (pro)

PostgreSQL is a popular relational database management system (RDBMS). Our PostgreSQL tutorial provides basic and advanced concepts of PostgreSQL. In this tutorial, we are going to learn all the topics of PostgreSQL language, such as create a database, drop a database, select database, select table, update a record, create a table, delete record, drop table, triggers, functions, insert the record, procedures, cursors, etc. - What is PostgreSQL Database? PostgreSQL is an ORDBMS [Open-Source Object-Relational Database Management System]. It is used to store data securely; supporting best practices, and allow recovering them when the request is processed. - History of PostgreSQL PostgreSQL was developed by the PostgreSQL Global Development Group, which is led by a computer science professor named Michael Stonebraker at the University of California, Berkeley [UCB]. The professor's stonebreaker started in 1986 as a follow-up project and a post-Ingres project to overcome the problems of the existing database system. Initially, it was called as Postgres, but in 1996, the project was renamed to PostgreSQL. Then again, in 2007, they did some analysis, and the development team decided to preserve the name as PostgreSQL. And now, it is the most innovative open-source database available in the market.

Learn R Programming with structured lessons, quizzes, and tools designed to help you understand R step by step. Explore R syntax, data structures, data analysis, and visualization while tracking your learning progress. Whether you are discovering R for the first time or revisiting essential programming concepts, Learn R Programming provides an organized learning experience with clear topics, quiz questions, and progress tracking. **LEARN R PROGRAMMING STEP BY STEP** Explore a structured learning path covering essential R programming concepts. Browse chapters, open individual lessons, and continue learning at your own pace. The app includes 15 chapters, 113 lessons, and 226 quiz questions, giving you an organized way to explore R programming. **EXPLORE R PROGRAMMING TOPICS** Discover lessons covering: - Introduction to R Programming - History and Features of R - Applications of R in Data Science - Installing R and RStudio - Setting Up the R Environment - Understanding the R Console and Scripts - Writing and Executing R Programs - Basic Syntax and Data Types - Vectors and Lists - Matrices, Arrays, and Factors - Data Frames in R - Functions in R - Data Analysis - Statistics - Data Visualization Navigate through lessons to explore important concepts and develop your understanding of R programming. **PRACTICE WITH QUIZZES** Reinforce your understanding with quiz questions connected to the learning content. Explore 226 quiz questions across the course and use them to review programming concepts as you move through lessons. **TRACK YOUR LEARNING PROGRESS** Follow your learning journey with a dedicated progress dashboard. View your completed lessons, overall completion percentage, learning statistics, and daily learning streak. The progress screen helps you identify what you have completed and what remains to be explored. **SEARCH LESSONS AND TOPICS** Find relevant learning material using the built-in search feature. Search lessons, browse categories, explore popular topics, and revisit recent searches. Quickly locate topics such as functions, data frames, vectors, and other R programming concepts. **EXPLORE INDIVIDUAL CHAPTERS** Each chapter provides an organized lesson list with progress information. View lesson completion status, quiz counts, and reading-time information. Return to lessons you have started and continue your learning journey. **TAKE NOTES WHILE LEARNING** Keep important information organized with the built-in notes feature. Record useful points while exploring programming concepts and revisit your notes when needed. **SAVE BOOKMARKED LESSONS** Bookmark lessons you want to revisit. Access saved learning material through the app's bookmarked lessons section and return to important topics. **BUILD A DAILY LEARNING HABIT** Create a personal learning schedule to support consistent study. Choose your preferred study time, select a duration of 15, 30, or 45 minutes or one hour, and set repeat days. Enable study reminders to receive notifications at your scheduled time. **PERSONALIZE YOUR LEARNING EXPERIENCE** Adjust available app preferences to suit your reading and study habits. Explore appearance settings, dark mode, text-size preferences, app language settings, and learning notifications. **COMMUNITY HELP** Explore programming questions, community answers, and shared solutions. Browse available topics and find explanations related to programming questions. **STAY MOTIVATED** View daily motivation, monitor your learning streak, and follow your progress as you complete lessons. Learn R Programming brings lessons, quizzes, search, notes, bookmarks, progress tracking, and study scheduling together in one organized learning experience. Start exploring R programming, understand essential concepts, and build your knowledge one lesson at a time.