SQL language | 5/25 | UPV

Título: SQL language

Descripción automática: In this video, the presenter offers an introductory overview of SQL (Structured Query Language), a non-procedural language used for managing and accessing data in relational databases such as databases. SQL is used to articulate queries and statements without writing a program, featuring keywords like CREATE, INSERT, UPDATE, and DELETE for data management.

The video explains that queries, primarily using the SELECT keyword, are essential for data retrieval, and constitute the bulk of database interactions for generating reports. Statements, on the other hand, are used to define and manage data within a database. The presenter provides practical examples of these operations, demonstrating how to use the DELETE command to remove a record, the UPDATE command to modify data, and the INSERT command to add new data into a database.

Additionally, the use of SELECT queries with WHERE clauses is showcased, explaining how data can be filtered based on specific conditions. Examples illustrate the outcomes of different conditions using the fields of a student table, highlighting the SELECT command’s ability to retrieve pertinent data based on criteria like age or city.

The video concludes by summarizing the primary SQL clauses and commands introduced, emphasizing the importance of conditions in queries for extracting relevant data. This serves as a foundational guide to the basics of SQL and its role in data extraction and manipulation.

Autor/a: Despujol Zabala Ignacio

#SQL #relational databases