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via Udemy |
Go to Course: https://www.udemy.com/course/sql-e-database-relazionali/
Certainly! Here's a comprehensive review and recommendation for the Coursera course based on the details provided: --- **Course Review: Impara ad utilizzare il linguaggio SQL passo passo e guidato** This course offers an in-depth and structured approach to learning SQL, making it ideal for beginners as well as those looking to deepen their understanding of database management and SQL coding. The course is thoughtfully divided into sections that cover different tools, concepts, and practical applications, providing a well-rounded learning experience. **Course Content & Structure** The course begins with a practical introduction to working with databases using phpMyAdmin and MySQL on a local XAMPP setup. This hands-on approach allows students to create and populate databases through software interfaces, helping to build confidence in handling data before diving into coding. In the second phase, the course shifts focus to DBeaver and PostgreSQL. This transition is excellent for learners aiming to take their skills to the next level by working directly with SQL code and exploring different database systems. The course covers fundamental operations such as creating databases and tables, defining constraints (primary keys, foreign keys, unique, check, not null, default), and modifying data with SQL commands like UPDATE, DELETE, and the use of wildcards and LIKE patterns. The curriculum also emphasizes data retrieval techniques, including complex queries with IN, BETWEEN, ANY, ALL, and EXISTS conditions, along with advanced functions like aggregate functions (SUM, MIN, MAX, AVG) and concepts such as GROUP BY and HAVING. Additionally, students are introduced to views, common table expressions, and relational algebra, providing a comprehensive foundation for database design and querying. **Practical Application & Exercises** One of the course’s strengths is its dedicated exercise section, offering varied problem-solving methods to reinforce learning. The final parts involve real-world applications, such as remote database connections to a CRM system, which enhance practical understanding and prepare students for real job scenarios. **Advantages** - Step-by-step guided learning suitable for beginners - Exposure to multiple database tools and systems - In-depth coverage of SQL commands, constraints, and functions - Practical exercises with diverse solutions - Introduction to conceptual database design and relational algebra - Real-world practice with remote database access **Recommendation** I highly recommend this course for anyone interested in mastering SQL and understanding database systems in a comprehensive and applied manner. Its structured approach, practical exercises, and exploration of different database environments make it a valuable resource for aspiring data professionals, developers, or anyone who needs to manage and query databases effectively. **Final verdict**: Whether you are starting out or looking to expand your existing SQL skills, this course provides a thorough, practical, and engaging pathway to become proficient in managing and manipulating databases. --- If you have any specific preferences or want a different tone of review, feel free to ask!
Impara ad utilizzare il linguaggio SQL in modo passo passo e guidato.Il corso è diviso in parti per affrontare modalità di lavoro differenti e tematiche diverse.Inizieremo con phpmyadmin e MySql,in locale con XAMPP, creando ed inserendo dati prima usando il software, per iniziare a prendere confidenza con il mondo dei database. In una seconda fase invece abbandoneremo questi strumenti per passare al software DBeaver e Postgres, in modo da poter fare un salto di qualità ed iniziando a lavorare sul codice vero e proprio, ma sopratutto per vedere sistemi diversi nello stesso corso. Vedremo come creare database e tabelle, ed in vincoli di integrità primary keyforeign keyuniquechecknot nulldefaulttruncatedropalterconstraintSarà spiegato come modificare i dati via SQL:Update setdeletelikewildcardsilikesimilar toCome fare una ricerca all'interno di un database: Innot inbetweenanyallsomecoalesceexists e not existscaseVedremo poi le funzioni aggregate ed in generale l'aggregazione dei dati:order bylimitoffsetcountsumminmaxavggroup byhavingview (viste)common table expressionsAll'interno del corso saranno affrontate anche concetti di algebra relazionale, progettazione concettuale ed il modello E/R.Dopo una sezione di approfondimento, ci sarà una intera sezione dedicata agli Esercizi con alcune varianti di risoluzione in modo da poter ottenere lo steso risultato con tecniche diverse. Nella parte finale saranno affrontate invece alcune esperienze pratiche con connessione da remoto di un database di un CSM reale.