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what is informatica?

INFORMATICA : Branch of engineering that studies the information processing by using automatic machines. It is a broad field that includes the theoretical foundations , design , programming and the use of computers as tools for troubleshooting.

FEATURES:
1 No one can apply the traditional figures of the Law on the Information given its originality, so you have to create new figures.
2 risk to the exercise of the freedoms of citizens.
3 continuous emergence of computer goods of economic content they need legal protection.
4 multinational empire imposed a series of clauses that are opposed to Spanish law.
5 Influence of common law in language and in its doctrine.
6 A formation of two French words information and automatique
7 studies the automatic processing of information using electronic devices and computer systems.
8 Discipline charge of studying methods, processes, techniques, development and utilization
9 End to store, process and transmit information and data in digital format.

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Duvan Suarez Olejua

DECIMAL

Also called decimal system, numbering system is a positional numeral system in which quantities are represented using arithmetic based powers of the number ten. The set of symbols used (System of Arabic numerals) consists of ten digits: zero (0) - one (1) - two (2) - three (3) - four (4) - five (5) - six (6) - seven (7) - eight (8), nine (9).

Sebastián Ortiz

                                                                        DEVELOPER

A software developer is a person whose work is to research, analyze, design, implement and test software that was required by a specific company or client. A software developer can also create applications for anyone to use that can be distributed in many ways across the internet or platforms dedicated to distribute them. Software developers can be analysts or programmers and they normally work in groups to be able to create software faster.

Santiago Valencia Buitrago

INTERNET

The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite (TCP/IP) to link several billion devices worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries an extensive range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web (WWW), the infrastructure to support email, and peer-to-peer networks for file sharing and telephony.

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MySQL Tutorial

MySQL is the most popular Open Source Relational SQL database management system. 

MySQL is one of the best RDBMS being used for developing web-based software applications.

This tutorial will give you quick start with MySQL and make you comfortable with MySQL programming.

Audience

This reference has been prepared for the beginners to help them understand the basics to advanced concepts related to MySQL languages.

Prerequisites

Before you start doing practice with various types of examples given in this reference, I'm making an assumption that you are already aware about what is database, especially RDBMS and what is a computer programming language.

Compile/Execute MySQL Programs

If you are willing to compile and execute SQL programs with SQLite DBMS but you do not have a set up for the same, then do not worry. The compileonline.com is available on a high end dedciated server giving you real programming experience with a comfort of single click execution. Yes! it is absolutely free and it's online

prepared by:

Maira Alejandra Palacios Córdoba

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CASE Tools

CASE tools are set of software application programs, which are used to automate SDLC activities. CASE tools are used by software project managers, analysts and engineers to develop software system.

There are number of CASE tools available to simplify various stages of Software Development Life Cycle such as Analysis tools, Design tools, Project management tools, Database Management tools, Documentation tools are to name a few.

Use of CASE tools accelerates the development of project to produce desired result and helps to uncover flaws before moving ahead with next stage in software development.

      

          

Prepared by: 

Sebastian Salas Mejía

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Elizabeth Pérez Alfonso

ALGORITHM

An algorithm is a set of instructions designed to perform a specific task. This can be a simple process, such as multiplying two numbers, or a complex operation, such as playing a compressed video file.

A computer program can be viewed as an elaborate algorithm. In mathematics and computer science, an algorithm usually means a small procedure that solves a recurrent problem.

In computer programming, algorithms are often created as functions. These functions serve as small programs that can be referenced by a larger program. For example, an image viewing application may include a library of functions that each use a custom algorithm to render different image file formats.

Norberto Cárdenas Luna

DATABASE

A database is an organized collection of data.[1] The data is typically organized to model aspects of reality in a way that supports processes requiring information. For example, modelling the availability of rooms in hotels in a way that supports finding a hotel with vacancies.

Database management systems are computer software applications that interact with the user, other applications, and the database itself to capture and analyze data. A general-purpose DBMS is designed to allow the definition, creation, querying, update, and administration of databases. Well-known DBMSs include MySQL, PostgreSQL, Microsoft SQL Server, Oracle, Sybase and IBM DB2. A database is not generally portable across different DBMSs, but different DBMS can interoperate by using standards such as SQL and ODBC or JDBC to allow a single application to work with more than one DBMS. Database management systems are often classified according to the database model that they support; the most popular database systems since the 1980s have all supported the relational model as represented by the SQL language. Sometimes a DBMS is loosely referred to as a 'database'.

Jhon Alexander Muñoz

DATA

Is a set of values of qualitative or quantitative variables; restated, pieces of data are individual pieces of information. Data is measured, collected and reported, and analyzed, whereupon it can be visualized using graphs or images. Data as an general concept refers to the fact that some existing information or knowledge is represented or coded in some form suitable for better usage or processing.

Raw data, i.e., unprocessed data, refers to a collection of numbers, characters and is a relative term; data processing commonly occurs by stages, and the "processed data" from one stage may be considered the "raw data" of the next. Field data refers to raw data that is collected in an uncontrolled in situ environment. Experimental data refers to data that is generated within the context of a scientific investigation by observation and recording.

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Firewall

A firewall is a device that works as a firewall between networks, allowing or denying the transmissions from one network to another. A typical use is to place it between the local network and the Internet, as a safety device to prevent intruders from accessing your sensitive information. A firewall is simply a filter that controls all communications that are passed on from one network to another and depending on what you are allowed or denied your step.

In this way a firewall can allow from a local network to the Internet web services, mail and ftp, but not to the IRC that can be unnecessary for our work. We can also set the accesses that are made from the Internet to the local network and we can deny all or allow some services such as the web, (if it is that we have a web server and want accessible from the Internet).

A firewall can be a software or hardware device, i.e. a gizmo that connects between the network and the cable of the Internet connection, or a program that is installed on the machine that has the modem that connects to the Internet. We can even find computers very powerful computers and with specific software that the only thing they do is monitor the communications between networks.

prepared by:

Laura Marcela Ramírez Laverde 

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DDL (Data Definition Lenguaje )

Simple artificial lenguaje, serves to define and describe the objects in the database, structure, relations and constraints. Some examples of functions: creation, modification and deletion of tables that make up the database.

1. Create table: is used to create new tables in the database
Example:
 
CREATE TABLE Persons

(

PersonID int,

LastName varchar (255),

FirstName varchar(255),

Address varchar(255),

City varchar(255)

);

2. Drop table: is used to delete tables in the database
Example:

DROP TABLE Persons

3. Alter table: is used to modify the tables of the database, adding fields or changing the definition of fields
Example:

ALTER TABLE Persons

ADD column_name datatype




Prepared by:
María Paula Herrera López
 

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COUNTER:

A counter is a variable whose  value is incremented or decremented in a constant quantity each occasion time a particular event or action occurs. Counters are used in order to count events or internal actions of a bluce; must perform an operation initialization and then successive increment or decrement the same. 

STRUCTURE:                                               int cont = 0                                   initiation of the bluce                                      cont = cont +1                                                 end of the bluce  

Prepared by: 
Andres Felipe Leon Villa

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                                                            Analyst

The systems analyst is a professional in the area of IT, applications development manager in terms of its design and production of algorithms and analyze the possible uses and modifications of the operating systems for greater efficiency of a computer system. Another mission of these people is to give technical support to users of existing applications.

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FIREWALL

It is a part of a system or network that is designed to block unauthorized access while permitting authorized communications.

It is a device or set of configured to allow, limit, encrypt, decrypt, traffic between the different areas based on a set of rules and other criteria devices.

Firewalls can be implemented in hardware or software, or a combination of both. Firewalls are frequently used to prevent unauthorized Internet users from accessing private networks connected to the Internet, especially intranets. All messages entering or leaving the intranet pass through the firewall, which examines each message and blocks those that do not meet the specified security criteria. It is also common connecting the firewall to a third network, called demilitarized zone, or DMZ, where the servers in the organization that must remain accessible from the external network are located.

A properly configured firewall adds a necessary protection to the network, but in no case should be considered sufficient. Computer security covers more areas and levels of work and protection.

A firewall is a system that prevents unauthorized use and access to your computer.
Firewalls can be software, hardware, or a combination of both. They are frequently used to prevent unauthorized Internet users from accessing private networks connected to the Internet, especially intranets.

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INTEGRANTE: Daniel Orozco Ochoa

FIREWALL

The term "fire wall" originally meant, and still means, a fireproof wall intended to prevent the spread of fire from one room or area of a building to another. The Internet is a volatile and unsafe environment when viewed from a computer-security perspective, therefore "firewall" is an excellent metaphor for network security.

In computer networking, the term firewall is not merely descriptive of a general idea.

The most important aspect of a firewall is that it is at the entry point of the networked system it protects. In the case of Packet Filtering, it is at the lowest level, or "layer" in the hierarchy (stack) of network processes, called the Network Layer or the Internet Layer. This means essentially that the firewall is the first program or process that receives and handles incoming network traffic, and it is the last to handle outgoing traffic.

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Santiago Rendón:

PROJECT

A project is a plan that consists of a set of activities that are interrelated and coordinadas.1 The reason for a project is to achieve specific objectives within the limits set a budget, and qualities previously established time frame previously definido.1 Project management is the application of knowledge, skills, tools and techniques to project activities to meet the requirements of project.2 consists in gathering several ideas to implement them, and is a venture that takes place during a limited time , which aims to achieve a single result. Is a response to a need, in line with the vision of the organization, although this can vary in function of interest. The project ends when the desired result, and you can tell that collapses when it disappears the initial need or resources available are exhausted. The traditional definition "is a planned, temporary and unique effort made to create unique products or services that add value or cause a beneficial change. This in contrast to the more traditional way of working, based on processes, which operates permanently, creating the same products or services again and again. "

Example:

Julian Cardona:

Flowchart

A flowchart is a formalized graphic representation of a logic sequence, work or manufacturing process, organization chart, or similar formalized structure. The purpose of a flow chart is to provide people with a common language or reference point when dealing with a project or process.

Flowcharts use simple geometric symbols and arrows to define relationships. In programming, for instance, the beginning or end of a program is represented by an oval.  A process is represented by a rectangle, a decision is represented by a diamond and an I/O process is represented by a parallelogram. The Internet is represented by a cloud. 

Flowchart building blocks

Example flowchart

A)

B)

Evelin  Cardenas:

Software

The software is all immaterial or intangible part that runs a computer to perform a series of specific tasks, colloquially known as software programs encompassing all the digital information that makes the set of physical and material elements that make the computer work intelligently.

Natalia Rengifo:

Domain

A domain describes the set of possible values for a given attribute, and can be considered a constraint on the value of the attribute. Mathematically, attaching a domain to an attribute means that any value for the attribute must be an element of the specified set. The character string "ABC", for instance, is not in the integer domain, but the integer value123 is.