SQL Database Relation Diagram

Intro to SQL: Hands-on The Structured Query Language

Learn the basics of SQL, the popular database query language, in this comprehensive introduction. Discover how to manipulate data from a database using SQL.
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SOLID Principles and The Clean Architecture

Software architecture and design principles like SOLID enabling effective software solutions. Get the tools and knowledge to become a software architecture expert.
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A Taste of Kotlin and Functional Programming

Kotlin is a multi paradigm language. Kotlin allows implemention of different paradigms for writing programs, including Functional, Procedural and OOP.
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Stop Spinning My Words! Codewars Solution

Write a function that takes in a string of one or more words, and returns the same string, but with all five or more letter words reversed.
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The maximum sum value of ranges — Ultimate version – Codewars

Have you solved the simple version and the challenge version? The difference between this version and the challenge version is
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The Binary Indexed Tree/Fenwick Tree

arrays operations are normally done at a linear time – 0(n). While in most casses is good enough, sometimes it can become very costly.
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String Incrementer Codewars Kata Solution

Your job is to write a function which increments string, to create a new string. The solutions runing at linear time, but the optimized one is space efficient.
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Maximum Subarray Sum Codewars Solution

The maximum sum subarray problem consists in finding the maximum sum of a contiguous subsequence in an array or list of integers
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Growth of a Population Codewars’ Kata

How many years does the town need to see its population greater or equal to p = 1200 inhabitants?
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isUnique? Determine if a string has all unique characters

Implement an algorithm to determine if a string has all unique characters. What if you cannot use additional data structures?

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Find All Short String Permutations in a Longer String

Given a short string A and a longer string B. Find all permutations of A that occur on B. Assuming that both strings contain only ASCII characters.
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Number of People in the Bus – Codewars’ Kata

There is a bus moving in the city, and it takes and drop some people in each bus stop. You are provided with a list (or array) of integer pairs. Elements of each pair represent number of people get into bus (The first item) and number of people get off the bus (The second item) […]
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Get the Middle Character – CodeWars’ Kata

You are going to be given a word. Your job is to return the middle character of the word. If the word’s length is odd, return the middle character. If the word’s length is even, return the middle 2 characters. Codewars Pseudocode Kotlin Implementation
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Everybody is Dancing in the OAuth 2.0 Protocol

The OAuth 2.0 is a framework that allows third-party applications to obtain limited access to an HTTP service, on the resource owner behalf.
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big-o-graph

Mastering the Big O Notation

Understanding algorithms is essential for making good decisions about which algorithms to use and how to make new algorithms that are correct and efficient.
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Angular Material: Constructing a Powerful Frontend App with Material Design

Discover how to use Angular Material to bring Material Design to your app. Learn about the components, utilities and more to create great user experiences.
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User Authentication with Firebase Auth and RxJS

Authenticate users using Firebase Auth, Angular and RxJS. This step-by-step guide will help you create secure, fast and reliable user authentication.
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RxJS – Unlock App Potential: Angular, Google Maps and Firebase

Angular makes a wide use of the reactive programming library RxJS. This post implements RxJS behavior subjects and observables for monitoring real time updates.
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Accelerate App Creation with Angular, Firestore and Firebase – Part 2

Lower-level details of individual modules of an Angular & Firebase application integrated with Google Maps and Firebase Auth APIs.
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Accelerate App Creation with Angular, Firestore and Firebase

Intoduction post for design and implementation of an Angular app integrated with Google Maps and uses Firestore as database, and Firebase as backend.
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An Insightful Look Into SQL Constraints and Triggers

A detailed look into SQL Constraints and Triggers – an essential component of any relational database. Learn how to use them correctly and efficiently.

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Introducing Relational Databases: A Guide to Understanding and Mastering the Basics of Database Management

Learn the basics of RDBMS and gain insight into how to use database efficiently. An overview of fundamental concepts of Relational Database Management Systems.
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