Week 1- Lesson 1: Querying Data скачать в хорошем качестве

Week 1- Lesson 1: Querying Data

School of Programming and Software Development sop-webfb-103: SQL fundamentals This is a beginner's introduction to using SQL and Relational Databases. In this lesson, we examine RDBMS, how to configure a MySQL server on Windows, and how to run basic queries to select information from a database table. Relational Database Management Systems (RDBMS) like MySQL organize data into tables with rows and columns, allowing for efficient storage, retrieval, and management of structured information. RDBMSs enforce relationships between tables using keys (primary and foreign), ensuring data integrity and reducing redundancy. MySQL is a popular open-source RDBMS known for its speed, reliability, and ease of use. It is commonly used in web development and supports standard SQL (Structured Query Language) for interacting with databases. SQL querying involves using SQL statements to extract and manipulate data from a database. Key SQL operations include: SELECT to retrieve data WHERE to filter results JOIN to combine data from multiple tables ORDER BY to sort results GROUP BY and HAVING for aggregation INSERT, UPDATE, and DELETE for modifying data Mastering SQL querying in MySQL allows developers to perform complex data analysis, reporting, and application development with structured data.