Kategorier: Alle - sql

af maria elena faican 4 år siden

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COMANDOS SQL DENTRO DE UNA BASE DE DATOS

Instructions provided offer a concise overview of essential SQL commands used to manipulate databases. The commands cover a range of actions such as creating and deleting both tables and databases, as well as modifying existing data.

COMANDOS SQL DENTRO DE UNA BASE DE DATOS

COMANDOS SQL DENTRO DE UNA BASE DE DATOS

Type in the name of the company you are going to have an interview with.

SELECT

Are you qualified for this position?


Interviewers will want to know whether or not you are able to do the job.

Answer the questions from this section and see if you are the right person for this position.

Leer o seleccionar los datos

What strengths qualify you for this job?



Example:

ambitiousgood communicatorfocuseddeterminedadaptablecuriousoptimisthard workerhonestpoliteco-operativeself motivatedenthusiasticgood leaderstrategic thinkerquick learnerflexiblegood problem solver

DROP TABLE

Eliminar por completo una tabla existente

ALTER TABLE

Modifica una tabla

How would you describe yourself?


Type in a short description.

CREATE TABLE

How ambitious are you?

Crea una tabla

Where and how do you see yourself in 5 years time?


Type in the answers.

DROP DATABASE

Elimina una BD

What experience have you got from your previous jobs? Make sure you specify all your previous work experience, part-time jobs, vacation jobs, voluntary work, and unpaid work experience that are relevant for the position you are applying for.

CREATE DATABASE

Do you fully understand what this position implies?

After you've made some research on the company, read the job description thoroughly, and try to fully understand what your responsibilities will be.

Crea una BD

What would you do on the first day?
What about the first week(s)? Fill in some of the actions that you are planning to take.

INSERT

Añadir o insertas nuevos datos.

UPDATE

Research the company

You should find and learn as much as you can about the company where you are having an interview.

The interviewer will want to see what you know about them and why you chose the company.

Doing your homework will show that you are really interested.

Cambiar o actualizar datos existentes

Why do you want to work for this company?


Think of what you can do for them, not of what they can do for you.

DELETE

eliminar datos existentes.

REPLACE

añadir o cambiar datos nuevos o existentes.

TRUNCATE

vaciar o borrar todos los datos de la BD.