iGearbox vs Learn SQL Database Programming

iGearbox is an ideal educational App to interactively calculate the gearbox ratio for regular and planetary gearboxes. It offers two main tools: 1) Gear Train Tool A touch drag & drop-based design area that you can select the gears from the library, assemble, and calculate the ratio and speeds of each gear and the whole gear train. 2) Planetary Gear Set Tool An interactive and dynamic graphic based environment to learn about the planetary gear sets with different configurations and calculate ratios and the gearbox output. User selects the stationary, the input and the output parts, and observes the motion of gear set components in action. Entering the number of ring and sun teeth, the app calculates the ratio and the gearbox output for each configuration. Also, the symbolic ratio relation of the gearbox will be shown for each configuration. ******** Features ********* Gear Train Tool: - Touch/ drag & drop-based design environment - Multiple gear train configuration (up to 8 gears in train) - Ratio and speed calculations for each gear and the whole gear train Planetary Tool: - 6 different configurations. i.e., each component (ring, sun, planets arm) can be selected as stationary, input, or output components - Dynamic interactive motion of the components for each configuration (Animations) - Symbolic ratio equation for each configuration - Ratio calculation for each case based on the sun and ring # of teeth - Output calculations based on the gear configuration and specification - Planetary gear set formulations as a help document - Adjustable rotating speed for the animations of the gearset - Dropbox upload of screenshot and data ******************************* iGearbox is a perfect tool for instructors to teach and show the basics and fundamental concepts of regular and planetary gearboxes. Connecting the device to the monitor or projector, instructors can present the animations of the gearbox for different configurations. ******************************* iGearbox is a universal App that works on iPad, iPhone, and iPod Touch. You will be able to install the App on all these devices when you buy one copy. Disclaimer: iGearbox is developed to be used for educational purposes. Although the calculations done by this App were made with great care, it may contain errors or inaccuracies. Using the results of the calculations is the sole responsibility of the user.

Learn SQL Tutorials is application for Learn SQL Programming for Database Management System. SQL is a domain-specific language used in programming and designed for managing data held in a relational database management system, or for stream processing in a relational data stream management system. It includes following Modules: SELECT Statements, INSERT Statement, UPDATE Statement, DELETE Statement, TRUNCATE TABLE Statement, UNION Operator, INTERSECT Operator, SQL Comparison Operators, SQL Joins, JOIN Tables, SQL Aliases, SQL Clauses, SQL Functions, SQL Conditions, SQL Tables and Views, SQL VIEW, SQL Keys, Constraints and Indexes etc. This application helps all Database Learners to Learn Better SQL Programming concepts. Have you heard that database skills are essential for developers to be skilled in and understand? Are you wanting to understand SQL and databases in general, but don't know where to start? Maybe you have a pressing need to learn about Database Design and/or Data Analysis but have not found a good place to learn. Or perhaps you are a developer who wants to improve your career options by having skills in SQL and MySQL, one of the worlds most popular databases. Whatever the reason you have arrived here, this app will... Help you understand and apply SQL with MySQL, including Database Design and Data Analysis. Having database skills is absolutely vital for developers to avoid getting left behind and to maximise job and consulting opportunities. Key concepts you will learn and work with in this app. SQL (Structured Query Language - very much an in-demand technology). MySQL (one of the worlds most popular and widely used databases). Database Design Data Analysis The database design section (normalization and relationships) isn't covered in the majority of SQL apps on Udemy. You will struggle to find another MySQL app that has a section on this. This section alone, will give you a huge edge over other applicants for jobs. Through the app you will go through creating an example database for a cinema online booking system using concepts taught in the database design section. Creating, Modifying and Deleting Tables in a Database (DDL) Inserting, Updating and Deleting Data from Tables (DML) Select Queries Joins Aggregate Functions Subqueries Database Design Creating Databases. In addition there are installation videos covering MySQL on Windows, Mac or Linux. Not only does the app teach you SQL, but there are multiple exercises for you to try with video solutions to further help you understand the material. Also note that while MySQL is the database of choice in this app, the SQL skills you acquire will work largely with any database. Who this app is for: University or college students Graduates or workers Intermediates on SQL Anyone who wants to learn SQL