EdX

Introducción a SQL y bases de datos relacionales (edX)

Introducción a SQL y bases de datos relacionales (edX)

Conoce las bases de datos relaciones y aprende SQL, el lenguaje estándar usado en el software empresarial que te permitirá consultarlas y extraer de ellas la información que necesites. El mayor activo de las empresas actuales son sus datos, datos que, mayoritariamente se alojan en bases de datos relacionales en línea. Prácticamente todos los sistemas de gestión de bases de datos relacionales utilizados en la actualidad utilizan SQL como herramienta para manipular y consultar los datos que contienen.

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El lenguaje SQL es un estándar internacional que permite, de forma sencilla, realizar potentes consultas de extracción y resumen de datos con muy pocos comandos.
Si quieres hacer una carrera en el mundo de la inteligencia empresarial (bussiness intelligence), dedicarte a la programación de aplicaciones web o cualquier otra actividad que requiera consultar o actualizar datos, el dominio de SQL es un requerimiento básico.
En este curso te enseñaremos los conceptos básicos necesarios para manejar una base de datos y te introduciremos gradualmente y de forma práctica al uso de SQL, empezando con la consulta simple de todos los datos guardados en una tabla y acabando con consultas complejas capaces de resumir los datos contenidos en varias tablas relacionadas, consultas que podrás replicar en un emulador SQL en la nube.

What you'll learn
En este curso te introducimos al mundo de las bases de datos relacionales y al uso de SQL para crearlas, modificarlas y consultarlas.
Trataremos:

  • Conceptos básicos de bases de datos y bases de datos relacionales como tabla, registro, campo, relación, clave primaria o clave secundaria
  • Uso del comando SELECT con la claúsula WHERE y diversas herramientas como IN, BETWEEN o LIKE para consultar bases de datos usando patrones de cadenas y rangos
  • Los comandos SQL de creación, cambio y borrado de tablas y bases de datos: CREATE, ALTER y DROP
  • Los comandos SQL de modificación del contenido de las tablas de una base de datos: INSERT, UPDATE y DELETE
  • Como agrupar y ordenar los resultados de una consulta SQL con ORDER BY, GROUP BY y cómo resumirlos con funciones como SUM, AVG, MAX o MIN
  • Como realizar consultas complejas que devuelvan los resultados de varias tablas con JOIN y UNION
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