OPTIMIZACION LOCAL DE CONSULTAS.

Még több ilyen

Mod1,2

Szerző: Jorge Flores

Conceptos básicos de bases de datos

Szerző: Mayra Leon

TIPOS DE TAREA SEGÚN STEINER (1972)

Szerző: Ronald Castro

FUNCION QUIMICA

Szerző: Luis Torres Cuello

ALUMNA: ROBLES GARCIA EVELYN GUADALUPE. MATERIA: BASES DE DATOS DISTRIBUIDAS. GRUPO:5751.

OPTIMIZACION LOCAL DE CONSULTAS.

To name your story, you have to think about the overall message and what you want your audience to understand from the story. Also, make it relevant and easy to remember.

La optimización local utiliza

los algoritmos de sistemas centralizados.

Se pueden eligen los algoritmos

para realizar las operaciones relacionales

Cada subconsulta que se ejecuta en un nodo

llamada consulta local

es optimizada usando el esquema local del nodo

El trabajo de la última capa se efectúa en todos los nodos

The ending of a story is essential. We all know that if the ending is weak, what happened before loses its importance. So make it unpredictable, but fair. A resolved ending answers all the questions and ties up any loose threads from the plot.

con fragmentos involucrados en la consulta

This is the closure section of the story.
See examples of possible outcomes below:

• all problems have been solved
• it's clear how each one of your characters ends up
• your main character is transformed by the challenge

el objetivo del procesamiento de consultas en un ambiente distribuido

The middle of the story is where you add layers of complications that will lead to the end. Reveal more about the character's journey. Did their personality go through changes? How did they overcome the challenges? And as you build up the story’s central conflict, make it more personal to that character. Also, from the middle act, you have to lead into the final act.

es transformar una consulta sobre una base de datos

There wouldn't be any tension and excitement in your story if there weren't any obstacles in your character's way.

distribuida en una especificación de alto nivel a una estrategia de ejecución

A story is nothing more than a character overcoming a series of difficulties to reach the desired goal. Obstacles usually create suspense and conflict. In overcoming obstacles, there is growth: weak becomes strong; hatred turns into love; sadness into happiness; wrong into right; lies into truth; or evil becomes good.

See a few examples below:

• stopping a meteor
• finding a killer
• finding love

eficiente expresada en un lenguaje de bajo nivel sobre bases de datos locales

Para procesar una consulta local solo se hace referencia

In the beginning of the story (or the exposition), you will need to introduce the setting and characters. You might also want to introduce the main conflict. This part of the story is important because it gives the reader necessary background information and maybe even a first insight into a character’s personality.

a tablas y bases de datos locales

que estén dentro de la misma instancia del manejador de bases de datos

en una única maquina y que nos se tenga que conectar

al servidor a otras maquinas para poder efectuar la consulta.