类别 全部 - ciclo - datos - vida - diseño

作者:YULY ANDREA DUARTE GONZALEZ 3 年以前

190

BASE DE DATOS (BD)/DATA BASE

Las bases de datos son esenciales para almacenar y gestionar grandes volúmenes de información, permitiendo un acceso eficiente a los datos. La normalización es crucial en este contexto, ya que organiza los datos en diferentes tablas y establece relaciones entre ellas para eliminar redundancias y dependencias incoherentes.

BASE DE DATOS (BD)/DATA BASE

BASE DE DATOS (BD)/DATA BASE

The first division between continents was made by ancient Greek navigators, who named them 'landmass, terra firma'.

Generally classified by convention rather than any strict criteria, nowadays seven regions are regarded as continents from a geopolitical point of view.

Una base de datoS es en donde se almacena una gran cantidad de información y acceso a esta.

CICLO DE VIDA DE UNA BASE DE DATOS

North America has five time zones and it is the only continent with every type of climate.

North America was named after the explorer Amerigo Vespucci and is also known as the 'New World'.

The world's largest sugar exporter among the seven continents - Cuba - also called the 'sugar bowl of the world' is located here.

MANTENIMIENTO
Se pueden comparar con los almacenes o bibliotecas donde se pueden guardar grandes cantidades de datos organizados para sus posterior consulta.
IMPLEMENTACION
En esta fase se implementan los controles de seguridad externos e internos.
SELECCION SGBD (SISTEMA GESTOR DE BASE DE DATOS)
Proporciona la capacidad de definir, mantener y utilizar las base de datos
DISEÑO

The specialty of some animals is they are found only in a particular region and nowhere else in the world. North America is home to many of such amazing animals.

Name at least 6.

Se toman en cuenta las estructuras de almacenamiento y métodos de acceso necesarios para que funcione eficientemente
RECOLECCION Y ANALISIS

Native Americans have lived along this river and its tributaries for thousands of years. Most were hunter-gatherers, but some formed agricultural societies.

Formed from thick layers of the river's silt deposits, this river's embayment is one of the most fertile regions of the United States; steamboats were widely used in the 19th and early 20th centuries to ship agricultural and industrial goods.

Name this river.

Mediante entrevistas, observaciones, investigación o cuestionarios, se analizaran los requisitos de los clientes o os usuarios.
DEFINICIÓN

The world's largest freshwater lake by surface area and the third-largest freshwater lake by volume can be found here. It provides a route for the transportation of iron ore, as well as grain and other mined and manufactured materials.

Large cargo vessels called lake freighters, as well as smaller ocean-going freighters, transport these commodities across this lake.

Name this lake.

Ira dirigido dependiendo de los usuarios y qué usos se le pretende dar, y asimismo, se determina con que otro sistemas interactuará.
PLANIFICACIÓN

There are 23 countries that make up North America.

Name as many of you can! Don't forget about their capitals.

Aquí se definen los lineamientos para llevar a cabo de modo eficiente las etapas que conforman el ciclo de vida.

MODELO LOGICO

Australia is the world's smallest continent and is also known as an 'island continent' as it is surrounded by water on all sides.
It includes 14 countries and it is the least populated continent.

Its name comes from the Latin word 'australis' meaning 'southern' because it lies entirely on the south of the equator.

ETAPA DE REESTRUCTURACION

The largest coral reef can be found here.
Name this coral reef, add its length and mention what type of coral is it.

Consiste en modificar el esquema obtenido en la fase anterior para adaptarlo a las consideraciones de eficiencia.
ETAPA DE ESTRUCTURACION

Out of 14, how many countries you can name?

How about these countries' capitals?

EL objetivos principal es encontrar el esquema que sea una representación fidedigna del mundo real.

NORMALIZACION

Of the seven continents of the world, Africa is the second largest.

Africa comprises 54 countries and it is the hottest continent.

The equator passes through the middle of Africa and it receives direct sunlight throughout the year.

The world gets 66% of its chocolate, 50% of the gold and 95% of the diamonds from Africa.

La normalización es el proceso de organización de datos en una base de datos. Esto incluye crear tablas y establecer relaciones entre dichas tablas de acuerdo con reglas diseñadas tanto para proteger los datos como para que la base de datos sea más flexible al eliminar la redundancia y la dependencia incoherente. Las descripciones siguientes incluyen ejemplos.

Out of 54, how many countries you can name?

How about these countries' capitals?

Tercer formulario normal Elimine los campos que no dependen de la clave.
Segundo formulario normal Cree tablas independientes para conjuntos de valores que se aplican a varios registros. Relaciona estas tablas con una clave externa.
Primer formulario normal Elimine los grupos de repetición en tablas individuales. Cree una tabla independiente para cada conjunto de datos relacionados. Identifique cada conjunto de datos relacionados con una clave principal..

COMPONENTES

Europe is separated from Asia by the Ural mountains and the Caspian Sea.

It is surrounded by water on three sides: Mediterranean Sea in the south, Atlantic Ocean in the west, and the Arctic Ocean in the north.

Three-fourth of the world's potatoes grow in Europe.

USUARIOS

Europe has many exceptional animals, birds, and reptiles with unique methods of staying and hunting.

Name at least 4 of them.

Administrador de la base de datos.
Usuario final
Programador de aplicaciones.
PROGRAMA

Europe is a large region, with several major rivers that connect its many countries. There are five primary rivers in Europe, and one of them flows through 10 countries, more than any other river in the world.

Name these rivers.

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Access
Oracle
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EQUIPO

Europe is one of the smallest continents, yet it is home to some of the largest mountain ranges.

About 20% of the total landmass of the continent is considered mountainous.

Name the 5 longest mountain ranges in Europe.

La computadora entre si.
Dispositivos de entrada y salida.
Unidades de almacenamiento secundario.
INFORMACION

The most beautiful cities in the world can be found in Europe. History, architecture, arts, and famous cuisine is representative almost to each country.

Out of 51 countries how many you can name?
And how many capitals?

Está integrada y además compartida.