Windows Live space

Windows Live space

Good morning,computer enthusiasts

Today's topic is networking. At its most elementary  level, a network consists of two computers  connected to each other by a cable so they can share data. All networking. no matter how sophisticated. is based on this simple system. 

Networking arose from the need to share data in a timely fashion. PCs are valuable business tools for producing data, spreadsheets, graphics, and other types of information, but do not let you quickly share the data you have produced. Without a network the documents have to be printed out so that others can edit them or use them. At best you give files on  floppy discs or on  CDs to others to copy to their computers. This is called working in a stand - alone environment. If a worker were to connect his computer to other computers, he could share the data on the other computers and   printers. A group of computers and other devices connected together is called a network, and the concept of connected computers sharing resources is called networking.

Computers that are part of a network can share the following:

Data

Messages

Graphics

Printers

Fax machines

Modem

Other hardware resources

 Networks started out small, with perhaps ten computers connected together with a printer. This limited the size of the network , including  the number of computers connected as well as the  physical distance that could be covered by the network. A network may be on a single floor of a building or within one small company.This type of network.within a limited area, is known as a local area network(LAN). As the geographical scope of the network grows by connecting users in different cities or different states, the LAN turns into a wide area network ( WAN ). The number of users in a company network can grow from tens to thousands.

Windows Live space

1/25/08

Good morning, computer enthusiasts

I hope you are enjoying a nice week.Today' topic is Linux. I will be presenting computing information in an introductory manner for the first part of the year. I feel like this will be a good place to start and educate.

Linux is used in two ways;specifically to the kernel itself - the heart of any version of Linux - and generally to refer to any group of applications that run on the kernel, usually referred to as a distribution. The kernel provides the overall environment in which applications can run, including the basic interfaces with hardware and the system for managing tasks and currently running programs.

Linux is both multitasking  and  multi-user. To say that system can multitask is to say that it can be running more than one application at a time. As well as being a multitasking operating system, Linux is also a multi-user operating system. Linux allows multiple, simultaneous users, fully leveraging the multitasking capabilities of the operating system. The great advantage to this is that Linux can be deployed as an applications server. From their desktop computers or terminals, users can log in to a Linux server across a LAN and run applications on the server instead of their desktop PC.

Among the applications available for Linux are:

Text and word processing applications. In addition to commercial word processing software such as WordPerfect and StarOffice, Linux offers powerful tools for editing text files and processing text in an automated fashion.

Programming languages. There is a wide variety of programming and scripting languages and tools available for Linux and all Unix operating systems. this abundance of programming tools makes it easy to develop new applications not only on Linux but also on most Unix and Unix - like operating systems.

X Windows. X windows is Unix'  answer to the graphical user interface. X Windows is a highly flexible and configurable GUI environment that runs on Linux as well as most Unix systems. Numerous applications that run in X Windows help make Linux an easy - to - use operating system.

Windows Live Account - Summary

1/24/08

Good morning,computing enthusiasts!

I hope you have a great day. Our topic for today is data warehousing.

A data warehouse is a database of data collected from many systems and used to support management reporting and decision making. When people talk about data warehousing, they are really referring to data stores and tools that,together. form modern reporting environments.

The goals of data warehousing are:

*  To provide a reliable.single. integrated. source of key corporate information

*  To give end users access to their data without relying on reports produced by the IS department

*  To allow analysts to analyze corporate data and even produce predictive "what-if  models from that data

Warehouse projects are started because users are concerned about the following:

Accessibility Can I get to my information when I need it?

Timeliness How  long after transactions are made do I get my information? How long does it take the system to produce a report?

Format What kind of reports can I get. In addition to paper reports, can I also get my data in spreadsheets, graphs, maps, or other analytical tools?

Integrity Can I believe the data I get? Is it accurate?

The data warehouse is just one component of modern reporting architecture. The real goal of reporting systems is decision support. or more recently. business intelligence, to help people make better, more intelligent decisions.

A data warehouse is a collection of data taken from transaction processing systems at given intervals. Data warehouses are databases used solely for reporting. This is in contrast to databases underlying traditional operational/data capture and on-line transaction processing(OLTP) systems.Examples of operational systems include the following:

General ledger

Account payable

Financial management

Order processing

Order entry

Inventory

Data warehouses are populated with data from two primary sources. Most frequently, they are populated with periodic migrations of data from operational systems. The second source is made up of external, frequently purchased databases.

Windows Live space

1/22/08

Good morning, computer enthusiasts!

My name is James Baugh, and I welcome you to my blog on computer technology. I will cover four areas of interest: operating systems, programming, networking and certification. My coverage will be introductory but quite comprehensive in scope.

One of the topics you hear a lot about these days is Project Management.

A project is a job that has a beginning and an end,a specified outcome at a stated level of quality, and a budget. These parameters are also called constraints. At any point of time you can only control three of the four parameters. When one of the parameters changes, at least one of the parameters must change in response.

A project can have 6 stages, which is also known as a project cycle. The stages are: problem identification, definition, project design, development, implementation, and evaluation.  In the problem identification stage, the project is only a thought.The problem is only thought of as problem in search of a solution; or an opportunity.In the definition stage, one correctly describes the problem  that the project is trying to solve.  In the project design stage, objectives are designed, the scope is finalized,activities are identified, activities are broken into logical components, resources are assigned, and estimates for time and costs are chosen. In the development stage resources are spent according to the project plan to complete the tasks specified in the project design.Implementation includes field testing and measurement. With feedback projects might be modified or re-engineered and services or service delivery might be redesigned.In the evaluation stage, project team members review the project.decisions can be made on what worked well and what areas are there room for improvement.

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