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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.
A Woman’s Appearance Do’s and Don’t for the Job Interview Proper dress and interview attire is one of the first and most important things that you have to work with when you are invited to an interview. Whether you are trying your luck on a position of CEO or as an entry-level worker, the person hiring you will make a great deal in out of the clothes you are wearing. Appropriate clothing is one of the first things that an interviewer will see of you and if you are off with it, you do not even have to talk much anymore. For a woman the dress to impress factor is way more complicated than for a man. A man can always choose to wear a business suit and tie, while there is not quite such an equivalent for the female clothing market. To give you a good idea about what women’s clothing articles you should wear when going for an job interview, here a short list: blazers, closed-toed shoes, dress pants, dress shirts, dress coats, women’s suits, skirts, hosiery and turtlenecks. All these clothing articles should be in solid colors and patterns. It is recommended to wear such colors as black, blue, navy, gray, brown and white/beige for shirts and tops. Colors and patterns need to be subtle and should not give the interviewer the wrong idea about you. Bright red attire might suggest that you are wilder or need to be the center of the room and this is not one of the traits that an employer wants to see in their employees. For women it is also very important that they do not wear to sexy cloths. No deep cut shirts that are exposing too much of the chest area, as this could suggest sexual tendencies to the future employer. Going along with this point is the skirt lengths. Should you decide to wear a skirt to your interview, keep your skirt lengths long enough to reach the knees or surpass them. Anything shorter is seen as naïve or even worse. Especially important when wearing a skirt to an interview is to wear tights and similar hosiery. Hosiery should be plain and without patterns. The colors should be complementing your business attire but not be too contrasting. When getting ready for your interview, besides the apparel you are wearing, the way you look is just as important. How about your hair? Make sure your hair is neat and do not style for a party. When putting on make-up, tread lightly. Do not use provocative colors such as way to red lips, especially in pale skin types. Make-up needs to be subtle and needs to emphasize your business attire. Most women do like their fingernails adorned with nail polish. When getting ready for an interview, it is important that your fingernails are neat and clean and when using nail polish, the color needs to complement your attire. Bright red is one of the colors that is not recommended to be used. Rather a clear, golden or darker subtle red color is more appropriate. It is also important to remember that anything that distracts from you as a person while being in an interview can take away the chance to land the job. Whenever you are going for an important interview it is recommended to have friends, family or maybe even colleagues check out your attire. Often times you might be wearing something that is not appropriate or does not fit right and in the excitement and rush of getting ready you might have not even realized it. Also, keep in mind that you need to feel comfortable in what you wear to be confident and secure when talking to the interviewer. 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. |