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Sistemas de información en las organizaciones

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Doc Center : Conceptos básicos de bases de datos. Una base de datos es un conjunto de información organizada de manera que pueda ser utilizada eficientemente. Un directorio telefónico, un diccionario, un calendario o un libro de recetas son ejemplos de bases de datos. La información en una base está organizada en forma de registros. Cada registro contiene toda la información sobre una persona o un elemento de la base. Por ejemplo, cada registro en el directorio telefónico contiene el nombre, dirección y número telefónico de una persona.

Cada registro contiene campos. Un campo se utiliza para almacenar una información particular. El nombre de un campo generalmente identifica la información almacenada en el campo. El conjunto de registros que utilizan los mismos campos conforma una tabla. 4D puede reorganizar los registros y realizar cálculos con la información para hacerla mucho más útil. 4D permite crear desde 1 hasta 32 767 tablas por base de datos. Algunas bases de datos tienen una tabla única. What is database. Main » TERM » D » By Vangie Beal (1) Often abbreviated DB, a database is basically a collection of information organized in such a way that a computer program can quickly select desired pieces of data. You can think of a database as an electronic filing system. Traditional databases are organized by fields, records, and files. A field is a single piece of information; a record is one complete set of fields; and a file is a collection of records.

An alternative concept in database design is known as Hypertext. To access information from a database, you need a database management system (DBMS) . (2) Increasingly, the term database is used as shorthand for database management system. Gestores-bases-datos.jpg (1000×797) What is a Database Management System (DBMS) STRUCTURE OF DBMS. DBMS (Database Management System) acts as an interface between the user and the database. The user requests the DBMS to perform various operations (insert, delete, update and retrieval) on the database. The components of DBMS perform these requested operations on the database and provide necessary data to the users.

The various components of DBMS are shown below: - Fig. 2.1 Structure Of DBMS 1. 2. 3. The Functions Of Data Manager Are: – • Convert operations in user's Queries coming from the application programs or combination of DML Compiler and Query optimizer which is known as Query Processor from user's logical view to physical file system. • Controls DBMS information access that is stored on disk. • It also controls handling buffers in main memory. • It also enforces constraints to maintain consistency and integrity of the data. • It also synchronizes the simultaneous operations performed by the concurrent users. • It also controls the backup and recovery operations. 4. 5. 6. 7.

Types of users in DBMS. Top 10 Enterprise Database Systems to Consider. How far back does your knowledge of databases go -- late-1980s, mid-1990s, five years ago? If so, you might not recognize some of the old timers in this list. You'll also do a double take if you didn't know many of them have their roots in the mid-to-late 1970s. It would be hard to argue that the database market is not mature.

It's also highly competitive, and enterprise database systems come packed with features from hot backups to high-availability. These database systems range in price from free to tens of thousands of dollars. Here is a shortcut to the research you need to determine which solution is best for you. 1. Oracle began its journey in 1979 as the first commercially available relational database management system (RDBMS). 2. Say what you will about Microsoft and its interesting collection of officers.

Big Blue puts the big into data centers with DB2. 4. 5. 6. 7. Have you ever heard of Teradata? 8. Another IBM product in the list brings you to Informix. 9. 10. Database Management. Database Server & Data Management Software | SQL Server 2012. Editions. MySQL is the world's most popular open source database. Whether you are a fast growing web property, technology ISV or large enterprise, MySQL can cost-effectively help you deliver high performance, scalable database applications. MySQL Community Edition is the freely downloadable version of the world's most popular open source database.

Commercial customers have the flexibility of choosing from multiple editions to meet specific business and technical requirements: ISVs, OEMs and VARs can learn more about MySQL as an Embedded Database 1 Features only available in Commercial Editions. 2 Annual Subscription: is defined as the right to use the specified program(s) in accordance with the applicable license metric and to receive Oracle Software Update License & Support for the specified program(s) for the term specified on the order. 3 Oracle Premier Support for MySQL is included in Annual Subscriptions (no extra cost) 4 Server: is defined as the computer on which the programs are installed. DB2 database software. Enterprise Data Management, Analysis and Mobilization Software - Sybase Inc.

PostgreSQL: The world's most advanced open source database. Informix Database Software. Global Leader in Data Warehousing, Big Data Analytic Technologies & Data Driven Marketing - Teradata. Popular Database Management Systems Overview. One of the most influential and widely spread open source database applications that manipulates large databases and can be accessed over the Web is MySQL database server. MySQL runs as a service providing multiple user access to several databases.

MySQL is popular for web applications and operates with the database elements for the platforms (Linux/BSD/Mac/Windows). MySQL popularity for use with web applications is closely associated to the popularity of PHP programming language which is often used along with MySQL. Many high-traffic web sites use MySQL as the backend for its data warehouse. MySQL is very popular with startup companies, small or medium businesses and projects because it can be easy to use at a low cost. In case when high speed reads are applied for web, gaming and medium or small data storages MySQL surpasses all the other database management systems. Find more information about MySQL Export and Import More information about MS SQL Server Export and Import. Ranking - popularity ranking of database management systems. Main Phases of Database Design. In the picture below there are the main phases of database design.

Database design is connected with application design. The requirements and the collection analysis phase produce both data requirements and functional requirements. The data requirements are used as a source of database design. The data requirements should be specified in as detailed and complete form as possible. In parallel with specifying the data requirements, it is useful to specify the known functional requirements of the application. Note that some phases are database management system independent and some are dependent. Conceptual Design Once all the requirements have been collected and analyzed, the next step is to create a conceptual shema for the database, using a high level conceptual data model. The result of this phase is an Entity-Relationship (ER) diagram or UML class diagram.

There are several notations to draw the ER diagram. Logical Design To create the relation shemas is quite a mechanical operation. Sistema de información. Elementos de un sistema de información. Un sistema de información es un conjunto de elementos orientados al tratamiento y administración de datos e información, organizados y listos para su uso posterior, generados para cubrir una necesidad o un objetivo. Dichos elementos formarán parte de alguna de las siguientes categorías: Todos estos elementos interactúan para procesar los datos (incluidos los procesos manuales y automáticos) y dan lugar a información más elaborada, que se distribuye de la manera más adecuada posible en una determinada organización, en función de sus objetivos. Si bien la existencia de la mayor parte de sistemas de información son de conocimiento público, recientemente se ha revelado que desde finales del siglo XX diversos gobiernos han instaurado sistemas de información para el espionaje de carácter secreto.

Generalidades[editar] Ejemplo de un sistema de información. Actividades de un Sistema de Información[editar] Ciclo de vida de los Sistemas de Información[editar] Sistema de planificación de recursos empresariales. La planificación de recursos empresariales es un término derivado de la planificación de recursos de manufactura (MRPII) y seguido de la planificación de requerimientos de material (MRP); sin embargo los ERP han evolucionado hacia modelos de suscripción por el uso del servicio (SaaS, cloud computing).

Los sistemas ERP típicamente manejan la producción, logística, distribución, inventario, envíos, facturas y contabilidad de la compañía de forma modular. Sin embargo, la planificación de recursos empresariales o el software ERP puede intervenir en el control de muchas actividades de negocios como ventas, entregas, pagos, producción, administración de inventarios, calidad de administración y la administración de recursos humanos.

Los ERP funcionaban ampliamente en las empresas. Definición[editar] Las aplicaciones ERP son sistemas de gestión global para la empresa. Se caracterizan por estar compuestos por diferentes módulos. Los objetivos principales de los sistemas ERP son: Modulares. Information Systems - The Work Centered Analysis Method. Overview of the work-centered analysis method This book is unique because it is organized around a work-centered analysis (WCA) framework which business professionals can use to think about systems. The elements of the framework and the five perspectives are introduced at the outset and then explained in more depth as the text unfolds. A table in the web page explaining how this text is unique summarized the way these ideas are developed throughout the text.

The following summary of the work centered analysis method is divided into four parts: introduction to the WCA framework how to view the WCA framework from five perspectives common confusions the WCA framework can help you avoid comparison of the WCA framework with other related frameworks the wca framework The WCA framework summarizes the elements any business professional should look at when analyzing an existing or potential system in an organization. The customer is whoever receives and uses the product of the work system. Dynamics ERP - Enterprise Resource Planning. Enterprise resource planning Microsoft Dynamics enterprise resource planning (ERP) business solution software empowers your people to be more productive and enables your systems to adapt as you grow, while delivering the insight you need to respond quickly in an ever-changing world.

Let us help you find the right ERP solution Enterprise organizations A global ERP solution that offers specialized retail, manufacturing, service industry, distribution, and public sector capabilities Small and midsize businesses Pricing, test drive, webcasts, and other resources for companies that want to grow beyond accounting software ERP stands for enterprise resource planning. Take a small and midsize business test drive (registration required) How do I purchase Microsoft Dynamics ERP?

You can purchase Microsoft Dynamics ERP through a Microsoft partner. Discover customer success stories Take the next steps What is ERP? What is ERP - Enterprise Resource Planning? A Webopedia.com Definition. By Vangie Beal Enterprise resource planning (ERP) is business process management software that allows an organization to use a system of integrated applications to manage the business and automate many back office functions related to technology, services and human resources.

ERP software integrates all facets of an operation — including product planning, development, manufacturing, sales and marketing — in a single database, application and user interface. ERP is an Enterprise Application ERP software is considered to be a type of enterprise application, that is software designed to be used by larger businesses and often requires dedicated teams to customize and analyze the data and to handle upgrades and deployment.

In contrast, Small business ERP applications are lightweight business management software solutions, often customized for a specific business industry or vertical. ERP Software Modules Explained Recommended Reading: The Difference Between CRM and ERP Enterprise ERP Trends 1. 2. Enterprise Resource Planning (ERP) Software | Reviews of the Best Systems. Top 10 ERP and Accounting Software Packages | Data Guidance Group, Inc. Looking for accounting software? An ERP system? Below is key information on the top 10 ERP and accounting software packages in the mid-market. In each category, we've selected fact sheets and other information to provide an overview of the software. Download the Guide to Selecting ERP Software Mid-Market products are used in businesses with sales from $2 million to $250 million (some vendors say $500 million), with the "sweet spot" from $5 to $50 million.

Top 10 Mid-market Packages Just Above the Mid-Market These products are just above the price point for a standard mid-market application. Products removed from the top ten: Sage ERP Pro (written in FoxPro)Sage PFW (formerly Platinum; a source within Sage advises that this product may be discontinued)Sage BusinessVisionMicrosoft Dynamics SLTraverse (Open Systems) If you are evaluating ERP or Accounting software, you might be interested in DGG's Guide To Selecting Business Software. Tier 1 Mid-Market Entry Level.