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  Is Airtable A No-SQL Database? Short answer: ·          From a user point of view, yes — Airtable behaves like a NoSQL system. ·          From a technical point of view, no — it’s not a pure NoSQL database. User / practical perspective ·          You don’t write SQL ( Do the SQL Course ) You don’t design schemas like in SQL databases You work with flexible records, links, and fields You query data via a REST API , not SQL Because of this, people often treat Airtable like a NoSQL database . Technical / internal perspective Airtable supports: Tables Relations (linked records) o     Structured fields Do the SQL Course This strongly suggests a relational (SQL-like) model under the hood , even though Airtable doesn’t expose SQL to users. So internally, it’s relational , not NoSQL. Do the SQL Cour...

  Two Ways MySQL Workbench Can Draw an ERD Do the course A. Reverse Engineer (from an existing database) Menu: Database → Reverse Engineer Workbench connects to your DB, reads all schema metadata, and draws the ERD automatically. B. Create a Model Manually (forward engineer) Menu: File → New Model You create tables visually, and Workbench generates SQL from your ERD. Do the course NB! Make sure that all primary and foreign keys are identified, because the diagram will be drawn based of primary and foreign key definitions.   Do the course

  How You Generate an ERD in SSMS (SSMS = SQL Server Management Studio)  Do the course Expand your database in SSMS. Right-click  Database Diagrams . Select  New Database Diagram . Choose the tables you want to include. SSMS automatically draws the ERD. Do the course

  What is a Data Warehouse? Do the course Have you ever thought about where all the information generated across industries is kept? Every day, the world produces billions of megabytes of data, and that number continues to rise. In this lesson, we’ll explore how data warehouses store this information in a centralized location and allow organizations to use it effectively. Let’s dive straight in. What is a Data Warehouse? Do the course A Data Warehouse (DWH) is a key element of a business intelligence ecosystem, designed to help users carry out analytical tasks and examine large datasets. It brings together information from a variety of sources—including transactional systems, application logs, and more. A DWH often acts as the organization’s authoritative source of data. You can think of it as a dedicated environment that supports management by holding vast amounts of historical information. By evaluating this data, a DWH enables companies to make more informed and...

s-Key In a data warehouse , an S-key usually refers to a Surrogate Key . Definition: Surrogate Key (S-Key) A surrogate key is an artificial, system-generated identifier used in a data warehouse dimension table. It has no business meaning —its only purpose is to uniquely identify a row. Common forms: Integer identity column (1, 2, 3…) UUID (less common) Hash key (in Data Vault) Why Surrogate Keys Are Used Surrogate keys solve several issues that arise in data warehouses: 1. Slowly Changing Dimensions (SCD) They allow tracking multiple versions of a dimension (e.g., customer address changes). Each version gets a different surrogate key, even if the business key (e.g., customer_id) is the same. 2. Stability Business keys can change (e.g., product codes, emails). Surrogate keys do not. 3. Performance Integer surrogate keys join faster than long strings or composite business keys. 4. Simplifies integration Multiple source systems may...

  What Is HeatWave MySQL? HeatWave MySQL is a high-performance cloud database service built on MySQL that includes an in-memory query accelerator . It boosts MySQL ’s speed for real-time analytics and mixed workloads without needing to move data to another system — reducing cost, complexity, and delays. Why Use It? Faster Analytics : Delivers major performance improvements for MySQL data queries and analytics. No ETL Needed : Analyze live MySQL transactional data without copying or transforming it. One Platform : Combines MySQL transactions and analytics in one cloud service. Cloud-Ready : Available on OCI , AWS , and Azure . Built-In Intelligence & Security HeatWave Autopilot : Uses machine learning to auto-tune and optimize performance — no expert needed. Enhanced Security : Built on MySQL Enterprise Edition , it includes advanced data protection tools. Key Features H...

  What Is SQLite?      SQLite is a C-language library that provides a compact, fast, self-contained, and reliable SQL database engine.    SQLite is the most widely used database engine in the world.    Integrated into: Almost all mobile phone operating systems The majority of computer operating systems Thousands of everyday applications    The SQLite file format is: Stable Cross-platform compatible Backward compatible (promised through 2050)    Common uses of SQLite files include: Sharing rich content between systems Long-term data archiving    Over 1 trillion SQLite databases are actively in use.    The SQLite source code is public domain , meaning: Free for anyone to use No licensing or usage restrictions    Learn SQLite with us at PCWorkshops!      

  Power BI Insights & Inspiration Unlock the true potential of your data with powerful Power BI techniques. Bringing Charts to Life with Conditional Formatting Want your visuals to speak louder ? Conditional Formatting lets you highlight trends and patterns—like rising or falling sales—by applying dynamic visual cues. It’s a game-changer for telling clear, data-driven stories. While it's easy to apply conditional formatting in tables using the Power BI formatting pane, charts don’t offer this feature directly. But don’t let that stop you—where there’s a challenge, there’s also a creative solution. With a bit of ingenuity, you can still bring this capability to life in your Power BI charts. ✨ Dive deeper and explore what's possible: Power BI Training with PCWorkshops   To learn more: https://pcworkshopslondon.co.uk/ms-power-bi.html

 Which type of database is your database?  Learn about databases at our course:  https://pcworkshopslondon.co.uk/sql-beginners-1-day-course.html 

  Why learn SQL in 2025? learn sql

SQL Project Ideas Have you recently attended a data analytics or similar interview, and they asked  how you could prove your skills? Here are some ideas for databases to create and upload to GitHub to showcase your skills if you are looking to change jobs. :

 Data Warehouse: A Comprehensive Overview This document provides a comprehensive overview of data warehouses , covering their definition, purpose, key characteristics, architecture, benefits, and common use cases. It aims to provide a clear understanding of what a data warehouse is and how it can be leveraged to improve business intelligence and decision-making. A data warehouse is a central repository of integrated data from one or more disparate sources. They are designed to store and analyze historical data to support business intelligence (BI) and reporting activities . Data warehouses are different from operational databases, which are designed to handle real-time transactions.   Key Characteristics of a Data Warehouse Subject-Oriented: Data is organized around major subjects of the business, such as customers, products, or sales, rather than operational processes. Integrated: Data from various sources is cleansed, transformed...