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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.
Reinventing Yourself Can Make a Difference in Landing a Better Job Are you stuck in a dead end job that isn?t getting you any closer to your goals? Did you wake up one morning to find yourself knee deep in a career you never wanted and one that is not making you happy? Many people feel this way ? it can be easy to ?fall into? a career that you think is temporary and then get so caught up in the day to day aspects of the job that never quite get out of it. If you find yourself in this kind of rut, the good news is that it is never too late to make a fresh start. No matter what your age is or what stage in your career you are at, you can always reinvent yourself to get closer to that perfect job. All you have to do is work up the courage to make the jump. The first step in giving yourself a career makeover is identifying exactly what you want to do. While it may be true that there is always time to reinvent yourself and start over, if you have to go through the process too many times, you are only wasting valuable time that could have been spent doing what you love. Don?t fall into yet another career that isn?t all that is it cracked up to be. Think about the things that you wanted to do when you first entered the working world. What was your dream job then? What career field was your passion? Is it still what you want to be doing today? Discover your dream, and then start building your goals around it. Once you know what you want to do, the time comes to start researching it. How do most people get started in the field? Will you need to start your own business, or are there companies out there already doing what you want to do? What kinds of entry level positions are available? Will you be able to do this in your town, or would moving to another city mean more opportunities for you? Before you make the leap, research your job options carefully. You may need to plan financially for the step you are about to take, so do your homework up front. Talking to other people in the field you want to enter is a great way to get actionable advice from people who have been there. When you know what kind of experience you will need to get started in the field of your dreams, think about the experience you have had in the past, and what you have done that matches up. This can mean either work related experience or things you have done as a hobby or class you have taken in school. Be creative here ? you may have experience you don?t even realize you have. For instance, if you want to open a bakery, and you are always in charge of the bake sale at your child?s school, this counts as experience. Comb through your history and pick out all of the things you have done that will give you a leg up in your new career. Last but not least, you have start creating a new image to present to the working world. Start over with a brand new resume, this time highlighting the experience you have this is relevant to your new career goals. Work on a great cover letter that explains your passion and why you want to switch fields. If you are starting your own business, work on building a website and creating a brand you can be proud of. The sooner you start living your new career, the sooner your dream job will fall into place. Web Hosting - Why Backups Are Essential One thing most web site owners have little time for is... anything! Anything other than focusing on their site content and the business or service it supports and the information it provides, that is. That means that administration often suffers, as it frequently must. There's only so much time in the day. But the one thing that you should never let slide are backups. They are like insurance. You rarely need it (you hope), but when you do you need it very badly. Performing regular backups - and testing them - doesn't have to be a nightmare. A little bit of forethought and effort and they can be automated to a high degree. And, they should be tested from time to time. Even when a backup appears to have gone without a hitch, the only way to know whether it's of any value is to attempt to restore the information. If it can't be restored, the backup is worthless. Even when the web hosting company provides the service, there is still some planning involved for the site owner. Hosting companies often rely on one or both of two methods. They backup everything (called a full backup), then backup anything which has changed since the last full backup (called an incremental backup). Of special interest are any configuration files that have been tailored. If you've modified the default installation of a software package, you want to be able to recapture or reproduce those changes without starting from scratch. Network configuration files, modifications to basic HTML files, CSS style sheets and others fall into the same category. If you have XML files, databases, spreadsheets or other files that carry product or subscriber information - about items purchased, for example, or people who signed up for a newsletter - those should get special attention, too. That's the lifeblood of your business or service. Lose them and you must start over. That can break your site permanently. It should go without saying that all HTML and related web site files that comprise visible pages should be backed up regularly. It isn't necessary to record every trivial change, but you can tailor backup software to exclude files or folders. Usually they're so small it isn't worth the trouble. But in some cases those small changes can add up in scenarios where there are many thousands of them. Here again, the backups are worthless if they can't be used. Even if the hosting company charges for doing so, it's worthwhile to test once or twice a year at least to ensure the data can be restored. That's especially true of database backups, which often involve special software and routines. Database files have a special structure and the information is related in certain ways that require backups be done differently. Developing a backup strategy can be straightforward. Start simply and review your plan from time to time, modifying it as your site changes and grows. But don't neglect the subject entirely. The day will come when a hard drive fails, or you get hacked or attacked by a virus, or you accidentally delete something important. When that day comes, the few minutes or hours you spent developing and executing a backup plan will have saved you days or weeks of effort. |