There are many reasons why you need to have SQL backup program, many of which you may never even Of course, everyone knows about the virus threat these days, but you should also consider other potential threats that are out there hiding in the risk of putting all your data.
One of the most common reasons why companies are turning to your SQL backup is due to simple user error. Someone makes a mass change that eliminates a large amount of data, and nowhere else to go, and backup. Someone could also do something a little more deliberately, in order to put all the company's data at risk.
Viruses, spamware, adware, and millions of other pieces of software can invade your network security, but you also should not forget the result of a natural disaster or a physical type of disaster happens in your office potential. It's not at all unusual that someone spilled a cup of coffee your portable computer, and destroy everything that is connected with it. It may be small enough plumbing problem, power surge, leakage, or fire destroyed your entire company, and if you do not have a SQL backup, waiting for you, no one knows what will happen to you or your company.
You'll notice that the latest backup packages are very easy to use, and they can automatically back up all of your information, and you do not even have to bring the server down or even locally. As a result, there is really no excuse at all not back up anymore. If you value your data and your job security, then you should remind ourselves once again of the importance of having a valid backup is at all times.
Do not be fooled surface simplicity. Many developers get comfortable with a certain way of designing the database in your web applications, so that they do not benefit from techniques they prefer to work to make things run faster and more efficiently. Many developers do not have mnd that the small site, which they can now grow into something incredibly large and complex, and the database, they created has become bloated, and not a good scale to meet increased traffic demands.
This article hopes to provide web developers with a number of methods to help make their database and query quickly and efficiently.
First Avoid character types
When you create a database, it is so easy to identify all the data types varchar type, because it can contain any data you want, number, or text. But the character data is among the most inefficient type of data you can get. If the field is only going to contain numbers, then that is one of a certain type (int, double, etc.).
Also, if possible, web development code, try using the numeric data types rather than characters. One of the most common things, the script will keep the flag, for example, whether someone answered "yes" or "no", etc. You can, of course, treat it like a "Y" or "N", but why not store above 0 and 1?
Therefore, it makes a difference when you have a database, for example, more than 500 000 entries, and running a SELECT on this field, comparisons are processed much more quickly the number of data types or character types. Also, if you need to return data to the calling script, digital data is less memory intensive than the data symbols. In addition, your web site development language (PHP, ASP, etc.) will also be able to process and functions better than the character data of numerical data.
I'm not trying to convince you to never use a character data type. Sometimes it is a necessity, but if you can find ways to reduce your SQL database, managed by character content, the better your server will cope.
Normalization of the data base is actually quite a complicated process. This is a process that describes the way to create the database structure, to avoid duplication of data in your database, and if used correctly, can result in significant operational benefits. But the whole process of normalization is slightly behind scope of this article, because it can fill up your books, but any developer, database design should seriously consider becoming knowledgable about the normalization and work it into your design