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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.
Following Up on Fallacies about Getting Free Stuff “Free stuff” – the mere whisper of the words is often enough to make many people throw common sense out the window and head for the free goods like a missile to a target. And then there are those people whose eyes glaze over when they hear those words, because they can’t believe anything worth having can actually be free. The truth about free stuff is really somewhere in the middle. Yes, you can really and truly cash in on many freebie deals for things that you want to have, but a healthy sense of cynicism about free gear is also useful. Here are some of the important things to keep in mind about free stuff. The first myth you should throw out the window is that nothing good comes for free. The fact of the matter is that the price tag on a good doesn’t always match up to the quality, and there are many great free things out there. Case in point: music. Sure, everyone has heard the scare stories about file sharing online, and maybe some big record labels will come after you if you focus on their artists. Dig a little below the surface, however, and you can find a whole new world of really great bands that are more than happy for you to listen to their music over and over again. The same goes for free software. People on the cutting edge of technology who have a passion for creating new and efficient applications often develop open source code software. They’re doing it for the love of it, and they often have more talent than any ten suit-and-tie tech guys trying to hock their latest product for a mega profit margin. Here is where the reality part comes in, however. Yes, you can find wonderful things that are completely free – but yes, you can also find a lot of free things that aren’t worth your time at all and in some cases can cause you a lot of trouble. The net is a great place to fall victim to a “free stuff” scam, but you can also sometimes come across these scams in the mail as well. If something is free, but requires you to give your credit card number or bank details, run the other way. Another myth people have about free stuff, especially free stuff on the internet, is that when you try to cash in, the only free stuff you will be getting is an inbox full of more spam than you can handle. The truth about this is, well, that is can certainly be true. Many companies give away free things in exchange for your email address, so they can try to hit you up to purchase things in the future. What makes this a myth, however, is that it can be avoided. If you don’t want to choke on an inbox of spam, and who could blame you, set up a special (free) email account that you will use exclusively for freebie hunting. You’ll have the best of both worlds. The last myth about free stuff involves the “catch” people are always looking for. Often, for free stuff, the catch is a bit of junk mail or email or the fact that you have to submit to a time consuming survey. Sometimes, the catch is that if you get free stuff through a trial offer, if you don’t cancel it, it keeps coming, and this time you have to pay. The truth about these catches is, however, that the catch is in the eye of the beholder. These things don’t make products any less free; so don’t write off every free offer offhand. You might just find a catch you can live with to get a great free product you really want. Copyright law Understanding Copyright Law Copyright law is a set of laws that is used to regulate things such as movies, plays, poems, musical compositions, drawings, paintings, sculptures, software, photographs, sculptures, literary works, choreographic works, radio broadcasts, televisions broadcasts and more. Copyright law is only regulated to cover the manner or form in which the information or material is expressed. For instance, it does not cover the idea or facts which are represented in a work. In instances where a copyright does not exist, patents or trademarks may be in place which can impose legal restrictions. Copyright law states that the holder of the copyright has the right to make copies or reproduce the work to sell. They can also export or import the work, create derivative or adaptation of the original work, display or perform the work publicly and assign or sell the rights to someone else. Copyright law is set up to protect people from having someone do something with their copyrighted work or material. Someone that has a copyright may choose to exploit their copyrighted work, or they may choose not to. Many people debate whether copyright law and copyrights are moral rights or merely property rights. It is important to note that in the U.S. copyright law covers protection for published and unpublished works. Copyright law protection covers a work from the time it is created in a tangible form. The author or creator of the work immediately holds the copyright to the work and it is the property of the author or creator. No one else can claim copyright to it, unless the original copyright holder (the author or creator) gives or sells the rights to another person. Many people fail to understand that merely owning or possessing a work does not give them the copyright to it. Just because you have ownership of a copyrighted work does not mean that you own the copyright. Likewise, if you copy someone’s work and list their name on it, you are undertaking copyright infringement. Many people also fail to understand when copyright protection is secured. The moment a work is written or created and it is in physical tangible form or recorded it falls under copyright law. While it is recommended to register your work through the Copyright Office, if your work is not registered and someone steals your work, they have violated your copyright. Using a copyright notice is not required by law. However, many recommended that the copyright notice or symbol be used so remind the general public that the piece is under copyright. Anything that is created after 1977 is protected by copyright law for the lifetime of the author of the creator, plus an additional 70 years after the creator’s death. The public domain is a good source of information that is no longer under a copyright or work that was never under a copyright to begin with. Virtually all works that were created or published in the United States prior to 1923 are said to be in the public domain. Things that can be found in the public domain that are free of copyright law generally include generic facts and information, works that have a lapse in their copyrights (this encompasses works that were created prior to 1978) and materials and information put out by the United States government. In addition, you may find works in the public domain that are free of copyright law because it has been dedicated to the public domain. |