Categorías: Todo - estadísticas - almacenamiento - seguridad - redundancia

por Erick Antonio Martínez García hace 4 años

245

Esquemas de replicación

Los esquemas de replicación de datos se dividen en centralizados y dinámicos, cada uno con sus propias ventajas y desventajas. En los centralizados, un procesador transmite periódicamente la información actualizada, mientras que en los dinámicos, cada procesador toma decisiones basadas en estadísticas locales, lo que puede reducir la sobrecarga y mejorar la respuesta a cambios en el modelo de lectura-escritura.

Esquemas de replicación

Esquemas de replicación

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.

Esquemas dinámicos

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.

Algoritmos centralizados vs dinámicos
Algoritmos dinámicos

Cada procesador toma decisiones para cambiar localmente el esquema de replicación, basado en estadísticas locales

Su sobrecarga es menor porque ellos eliminan los mensajes extras requeridos en el caso centralizado

Responden a cambios en el modelo de lectura-escritura de manera mas oportuna

Algoritmos centralizados

Cada procesador transmite periódicamente la información permitente

Eliminaciones de replicas

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

Creación de nuevas replicas

This is the moment when the main character surpasses the last obstacle and finally faces their greatest challenge.
The climax usually follows one of these patterns:


Type in your answer.

Esquemas estáticos

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.

Estructuras logicas

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

Otros
Grillas
Arboles
No cambien

Your character(s) need(s) motivation in order to solve the challenge(s).

Son diseños para trabajar en ambientes estacionarios

Secondary characters might also have motives that lead them to cross paths with the main character or which might trigger them to help the main character.

Con la ejecución de transacciones

Why does your character need to confront this challenge? What does he/she expect to accomplish by solving it?
See a few examples:

Se establece

Each story has a main character and that character usually needs to solve a problem or challenge. The character's challenge is the one that creates tension throughout the story.

Permanece hasta que el diseñador intervenga manualmente

Type in any other challenges which other characters in the story need to face.

Cambia su localización

Cambia numero de replicas

Cuando se diseña la base de datos

In most stories, there are 3 challenges. The number 3 is a mystical number symbolizing completeness. Try to come up with interesting challenges with which your character needs to struggle.
See a few examples below:

Distribución de datos

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.

Con redundancia de datos

The setting (time & place) of a story can change throughout the plot.

Modelo parcialmente replicado

Representa la selección de las mejores características de los anteriores, minimizando los efectos de las porciones costosas de cada uno

Se permite que la BD tenga cualquier combinación de los tres modelos previos

Este modelo otorga replicación parcial

Modelo totalmente replicado

Problemas

Sensory details include sight, sound, touch, smell, and taste. These details are important because they create depth in your setting.
See a few examples below:

Las actualizaciones son mas caras de realizar

Posee el costo mas alto asociado con el hardware debido a las N copias.

Beneficios

Your story can take place wherever your imagination will take you to.
For example: in an elevator, in an enchanted forest, etc. Don't forget to give details of the environment each time the setting changes, otherwise, the story can be confusing. Also, mention the seasons as each of them has unique weather and events.

Costos de consultas se minimizan

La confiabilidad aumenta

Sin redundancia de datos

Characters are essential to a good story. Usually, the protagonist(s) is/are the most affected by the plot. Introduce a character by focusing on their actions, interests, and occupation, as the physical appearance doesn't make a difference in most cases.

Modelo particionado

El control, la seguridad y el mantenimiento son ligeramente mas complejos

La confiabilidad es mas alta que en la versión centralizada

Minimiza el volumen de almacenamiento

Las actualizaciones serán mas rápidas y baratas

Distribuye las partes de ella en diferentes sitios

Utiliza la noción de tener una sola copia de la BD

Modelo centralizado

Type in the name of your character.

Desventajas

Add other qualities/attributes of the character.

Altos costos de los accesos remotos

Si una falla ocurre y los datos no están disponibles el sistema dejara de funcionar.

La confiabilidad es dependiente de la disponibilidad de la BD.

Ventajas

What is your character's main goal?

fight Evilfind lovedefeat his/her enemyrule the worldmake friendstime travelmake an awesome discoveryOther

No requiere optimización

Procesamiento de consultas simplificado en sitios remotos.

Control de la seguridad

Minimiza costos

Datos actualizados

Datos consistentes

Distribuido vi acceso local o remoto

Which traits best describe the character's personality? Choose more if necessary:

introvertedloyalkindindependentquick-thinkingadventuresomeidealisticsweet-naturedcalmrisk-takercreativewittystrictfussyweirdclumsyharshaggressivecarelessclingingcowardlycrueldeceitfulimpulsiveOther

No involucra distribución de datos

Choose the type of your chacter:

Protagonist (main character)Antagonist (main character's opponent)Flat (stereotypical character)Round (his/ her personality develops throughout the story)Static (doesn't evolve as a person throughout the story)Dynamic (dramatical change in personality)Confidant (the main character trusts him/ her)Foil (contrasting character who enhances the personality of another character)Other