JavaScript is a dynamically typed language, which means that it assigns the type based upon how it is used. The data type can change as values, and their types, change as the program executes. Without care of the data types, this can cause errors to occur. Consider the following code: We can test this theory…
In JavaScript, developers can make variable declarations in three different ways. Each has diferent implications for the program they are writing, which can cause some confusion. Variable declaration can be accomplished by using var, let, or by simply assigning a value with no declaration keyword (e.g., x = 5). Understanding the differences between x =…
Understanding the history and evolution of JavaScript is crucial for appreciating its current role in the tech ecosystem as well as some of the challenges that occur in programming in JavaScript. Here are some key highlights that will give you a sense of how JavaScript became what it is today: Birth of JavaScript (1995) JavaScript…
Welcome to the “An Intro to SQL Series,” where we embark on a journey to demystify the world of databases using the SQL programming language. This playlist is tailored just for you. Explore the Foundations of SQL: Dive into the fundamentals of SQL, the universal language for managing and manipulating relational databases. Understand key concepts…
Entity Relationship Diagrams (ERDs) are visual design tools for databases, crucial before table creation. This series teaches using Lucid Chart, an accessible browser-based tool with exportable SQL code capabilities. Instructions range from setting up workspaces and creating abstract entities to defining one-to-many and many-to-many relationships. It also covers adding field details like key types and data types. The series culminates with exporting ERD as SQL commands, demonstrating Lucid Chart’s efficiency in converting diagrams into databases.
Explore the essentials of MS Access as a relational database through a video playlist designed to teach building and managing tables, relationships, and queries. Start with the basics of database design, learn to edit existing tables, understand various data types, and handle data updates efficiently. Discover the use of MS Access Relationship Window, master query creation to retrieve and organize data, and import or export it seamlessly. Perfect for both beginners and those enhancing their database skills, the guide covers every aspect to achieve proficiency in Microsoft Access.
Sometimes you will need to have more complex conditions to determine what you need. This goes beyond having Boolean logic, but moves into finding a value in a series of values. This is where we might use a if else if series of code blocks, or a switch statement. If Else If Do you have…
Java has two different types of sets, Unsorted and Sorted… even if Math Sets are technically unsorted. Unsorted Sets Unsorted sets in Java are not a class that can be defined. Therefore you need to use the HashSet and then use the polymorphic nature of the OOP to create the set. From here, you want…
