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This section dives into the world of relational and non-relational databases, teaching you how to visually represent database structures.

We'll dive deep into relational databases, giving you a thorough understanding of essential concepts. This includes topics like foreign keys, various ON DELETE options, and the different types of relationships.

Ready to build a database? This section will hone your skills, emphasizing the importance of a well-structured database for peak performance. Here, you'll grasp the fundamental principles of crafting user-friendly databases.

Dette afsnit vil introducere dig til kodning i SQL. Det vil starte med nogle grundlæggende oplysninger relateret til SQL og SQL Databases generelt, og til sidst bevæge sig mod at skrive grundlæggende SQL queries. Afsnittet inkluderer også nogle sjove øvelser, hvor du får mulighed for at øve SQL-syntaksen.

Vi vil få en introduktion til filtrering af data fra vores valg. Dette vil give os kontrol over, hvilken slags data vi henter fra databasen. Denne sektion vil dække syntaksen for filtrering af data og forskellige operatorer, som kan hjælpe os med at skrive robuste betingelser for betinget udvælgelse af data.

Dette afsnit fokuserer på begreber relateret til sortering af tabeller baseret på kolonneværdierne. Sortering kan være nyttig til at udtrække minimums- eller maksimumværdier fra en kolonne eller for at gøre det lettere hurtigt at finde relevant information. Vi vil også se på et keyword, der kan hjælpe os med at begrænse antallet af rækker, der hentes af vores SELECT-udsagn, hvilket gør vores forespørgsler mere præcise.

Du vil lære om nyttige forespørgsler og nøgleord, der kan hjælpe os med at udfylde en database med nogle data. Dette vil inkludere forespørgsler til oprettelse af tabeller og til indsættelse af rækker i disse tabeller. Vi vil også dække to yderligere nøgleord, der kan hjælpe os med at gøre vores tabeller mere håndterbare og robuste.

Vi vil se på, hvordan man ændrer eller sletter data i en SQL-database. Dette vil inkludere forespørgsler til opdatering eller sletning af rækker i en tabel og at lave en kopi af en tabel eller slette den.

I denne sektion vil du lære, hvordan du grupperer og administrerer data effektivt. Vi vil introducere GROUP BY-operatøren til gruppering af data. Derudover vil du lære, hvordan du filtrerer grupperede data ved hjælp af HAVING-operatøren.

Du vil lære om indlejrede subqueries, hvordan man opretter dem, og hvordan man bruger dem effektivt.

Her vil du lære, hvordan man kombinerer flere tabeller, så du kan arbejde med en samlet tabel og forenkle oprettelsen af forespørgsler.

Lær grundlæggende om Data Definition Language (DDL) og Data Manipulation Language (DML) i SQL, herunder hvordan man opretter, ændrer og sletter databaseobjekter, samt hvordan man indsætter, opdaterer og sletter data i tabeller.

Why do we need a database? How does the interaction between a database and code work? What tools are used for different types of databases? You will learn all about this in this section!

This section will tell you how to set up and use Hibernate. You will learn how this framework works, what ORM is, and how to work with databases efficiently. You will also learn to write basic operations with a connected database, demonstrating your skills in practice!

In this section, we will complete work on the project's foundation for employee management in the company. We will add the remaining operations and one more entity.

Udforsk internettets indre funktioner. Lær hvordan data rejser over netværk, opdag protokollernes rolle, og afslør mysterierne bag IP-adresser og domænenavne. Få en overordnet forståelse af, hvordan webbrowsere og servere kommunikerer for at levere webindhold.

Opdag kraften i tags til at strukturere indhold, fra overskrifter og afsnit til lister og tabeller. Lær hvordan du forbedrer elementerne med attributter.

Kernen i HTML-dokumentstrukturen. Lær komponenterne i et HTML-dokument, inklusive doctype-deklarationen, head og body. Forstå formålet med hvert element, og hvordan de bidrager til den overordnede struktur af en webside.

Gør en webside mere attraktiv ved hjælp af medier som billeder, lyd og video. Arbejd med strukturerede tabeldata i form af tabeller.

Udforsk alsidigheden af HTML-formularer. Lær at designe intuitive og brugervenlige formularer ved at udnytte nøglekoncepter og teknikker. Opdag, hvordan formularer muliggør brugerinteraktion og dataindsendelse på hjemmesider.

You’ll learn the basics of backend development, including how the HTTP protocol works and the differences between HTTP and HTTPS. You’ll also study HTTP status codes and data formats like JSON and XML for transferring information between client and server.

In this section, we will dive into the essential concepts of backend development using Spring. We will cover various topics, including an introduction to Spring, the principles of Inversion of Control (IoC) and Dependency Injection (DI), the structure of a Spring Boot project, Spring MVC, three-tier architecture, and task management. Each chapter will build upon the previous one to provide a comprehensive understanding of backend development in a Spring environment.

This section covers the fundamentals and practical implementation of RESTful APIs, starting with the theoretical understanding of REST and its core principles. It also includes building your own API, working with DTOs, handling exceptions, integrating Swagger for documentation, and testing the API.

This section covers the basics of working with relational databases, including connection setup, migrations, and interaction with Object-Relational Mappers (ORM) using JPA and Hibernate. It discusses how to integrate databases with Spring Boot applications and explores key aspects of transaction management to ensure data integrity. The goal of this section is to enhance your database skills and promote their effective use in application development.

This section focuses on testing backend applications and covers essential topics such as the fundamentals of testing, unit testing using JUnit, and integration testing. It also explores the use of mock objects with the Mockito library to create effective and isolated tests. This section will help developers understand the importance of testing and learn how to utilize tools to enhance the quality and reliability of their applications.

This section provides an introduction to Redis, highlighting its core features and common use cases. You’ll learn how to install Redis on different platforms, including Windows and macOS, and get familiar with the basics of connecting to and starting the Redis server.

Here, we explore the essential Redis commands for managing and manipulating data effectively. You'll learn how to set, retrieve, increment, and delete data using commands like SET, GET, EXISTS, INCR, DECR, and tackle practical tasks to apply these concepts in real-world scenarios.

Here, you will learn about key Redis data types, including Lists, Sets, Sorted Sets, and Hashes. You will explore their functionality and practical applications through focused exercises designed to reinforce your understanding of each data type.

You'll explore advanced features of Redis, including managing key lifecycles, executing transactions, and leveraging the Pub/Sub messaging system. Additionally, you'll learn essential security practices to safeguard your Redis environment against unauthorized access.

This section introduces the fundamentals of caching and demonstrates how to configure Redis as a cache in a Spring application. It covers key caching annotations and practical examples of caching queries in web applications, concluding with a summary of the main concepts.