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Web Hosting - DNS, How The Internet Keeps Track of Names The way computers communicate is, in a way, very similar to something very familiar: the postal system that delivers letters and packages. Here's how... The Internet is just what the name suggests, a large inter-connected set of networks. But those networks are pointless without the one part that forms what is called their 'end-nodes', otherwise known as computers. Those computers often need to share information because the people who use them want to share information. But, in a system where there are millions of separate computers, how can you enable them all to communicate? One very important feature of that solution is performed by something called DNS, the Domain Name System. Every part of a network that is going to send or receive information is assigned an IP address. That's a numeric identifier that uniquely specifies a particular 'node', such as a computer, a router that directs traffic or other component. They look like this: 209.131.36.158 But those numbers are more difficult for people to remember and work with. They also aren't very attractive from a marketing perspective. So, a naming system was layered on top of some of them, mostly the computers involved, though routers have names, too. But once you have a system that associates a unique IP address to a given name, you need some way of keeping track of all of them. That's carried out by several different pieces of the system: Name Registrars, DNS Servers and other components. The Name Registrars, overseen by IANA (Internet Assigned Numbers Authority) and other international bodies, provide and keep track of domain names. When you register with GoDaddy or any of a hundred other intermediate companies, ultimately that information makes its way into a number of specialized databases stored inside DNS Servers. A DNS Server is the hardware and/or software that tracks and forwards the IP Address/Domain Name pair from one place to the next. In many cases, there are a number of them between your browser and the remote computer you want to share information with. Suppose you request information from, say, Yahoo's site by clicking on a link on their site. DNS resolves (translates) the name of WHO IS making the request and OF WHOM, to addresses, then passes the request through the network to the requested IP address. The requested data is then passed back through the mesh of network components to your computer and displayed in your browser. Whether the communication is between a desktop computer and a server somewhere, or between one server and another, the process is essentially the same. DNS servers translate names into IP addresses and the requests for data are forwarded on. In some cases those DNS servers are part of a specialized network computer whose sole job is to do the translation and forwarding. In other cases the DNS software may reside on a server that also houses a database of general data, or stores email, or performs other functions. But however complicated the chain or the parts, the basic process is simple. Translate the name to an address, just as the postal system does. Whether international or local, your name is associated with an address, and the deliveries are made to the address, then forwarded to a particular name.

Web Hosting - Databases, What Are They and Do You Need One? 'Database' is one of the most commonly used terms that one encounters in web site design. Yet, what they really are and whether they're essential is often not clear to novices. A database is a collection of organized data, stored in files that have a specific structure. It's that organization and structure that allows for easy and rapid storage and retrieval. The need for a database generally only arises when you have a certain amount of information and that information needs to have some structure. If you have a half-dozen names and addresses to store, a database is usually overkill. If you have a blob of data with no relationships between any of the items in that blob, maintaining a database is usually more trouble than it's worth. Maintain a database? Yes, like other complex systems a database, to be effective, needs to be designed properly at the outset then kept 'tuned' for good performance. The alternative is to gradually allow the database to become more and more disorganized. That leads to difficulty in use, poor speed of retrieval and more frequent failures. With MySQL, Access or MS SQL Server, the three most common choices of database product for web sites today, setting up a database is relatively simple. Even those with limited technical skill can get one up and running just by following some simple instructions. But some thought should be given to how you want the information organized, and to maintaining the system during its lifetime. Suppose you have a set of names, addresses, email addresses, products purchased, date purchased and amount. If you have only a few dozen records it matters very little how these pieces are arranged and related. A database usually isn't even warranted in this scenario. Once you have several thousand or more records, it matters a lot. Speed, the ease of expanding the set of attributes (like adding, say, product category), and other issues come into play. Even those with little technical expertise, but a willingness to exert logical thought and invest some time, can build a very robust database. Think about how you would organize a set of data (called 'tables'). Should Name, Address, and Product be in the same table? Or should the personal information be stored in one table and any product information (product, price, ...) in another? Some experimentation may be needed to get it right, but the choices have an impact on how easy the tables are to maintain. It also affects the speed with which programs can fetch old data and store the new. Having a database also introduces new maintenance issues for the server administrator, since backups usually need to be done differently. Recovering a failed database is usually more complicated than simply re-copying files from yesterday. Ask your hosting company what tools and skills they have for dealing with any database system you consider. It's true that introducing a database creates more complexity and the need for additional thought and administrative effort. At a certain level, professional expertise will be needed. But clearly the advantages outweigh the costs in many cases. Companies large and small eventually use databases to store and organize data. At some point, you may be fortunate enough to be one of them.

Finishing a Masterpiece and Getting it on the Shelves (how to get a book published) Writing a book is a monumental task in itself. The process is long, drawn out and grueling. Even if you thoroughly enjoy writing and writing on the same subject for an extended period of time, you will no doubt be exhausted by the writing of a book. Getting that book published, however, will take even more time and effort than producing the thing in the first place. Are you thinking about writing a book? Have you already written one and now are just wondering how to get a book published? If you are, read on. Here are a few tips on how to get from the starting line to triumphantly crossing the finish line. Writing that Book When starting out writing your book, before you are ready to consider how to get a book published, you may already feel daunted. To write a successful book you need to start out with some original thought. You probably have plenty of originality, but you may have trouble getting your ideas into a coherent flow of information that will be digestible by the general public. The first step is to create a book skeleton. You need to organize your thoughts into a progression of chapters. If your book will be non-fiction, start with a table of contents. Write chapter headings and sub-headings. You will automatically know that you’ll need an introductory chapter, but you should probably leave the content of your introduction for the last step. Organize your chapters so that they build upon one another. The more headings that you can brainstorm to begin with, the easier it will be to fill in your book with a series of short articles that flow into one another. If your writing will be fiction, you will need more of a storyboard. You will need to create cause and effect as well as character sketches. To make your story coherent your characters will need events to react to. Their reactions should become predictable as your readers get into the story. You may need to create some situations for your characters just for the purpose of introducing their traits to the reader. These are very general guidelines about how to begin constructing your book. The actual process will be much more involved as you move closer to finding out how to get a book published. Even after you are finished with the bulk of the content, your goal is still a ways off into the future. Getting to Print The next step in how to get a book published is finding a publisher. There are resources at your local library that will let you know who will be the best candidate for publishing the kind of writing that you do. After a series of queries and correspondence with the potential publishers you may get an invitation to send your manuscript. Then the work begins. A publisher is very experienced in finding books that are marketable. He knows what it will take to get your book to sell. Don’t be offended when his editors tears your writing apart. If they are doing that, you can enjoy the fact that you are on the road to a published book. Expect to enter into a close relationship of compromise and change with the editor as you rework and rework what you have already so painstakingly written. When you are finished you will have a readable and clean and correct manuscript ready for print. The road to getting a book published is a long one, but well worth the effort. Trust yourself, and trust the publisher to create a beautiful masterpiece. Don’t be discouraged if several publishers are not interested in your book. You may have to just keep the first few for yourself, and then again, they may eventually get accepted. Good luck and enjoy the process.