There is no doubt that you have heard the word database, but do you truly know what it is and what it does? Databases are simply structured collections of data that are stored by a computer system. They utilize software in order to organize the data and allow an individual to sort through and find information. A database is perfect for the storage of multi-user information, but can also be utilized by single users.

A relational database is one of the most popular databases in use. It utilizes tables that contain columns or multiple columns to store information. Unlike the original flat database, a relational database makes it easier to recover data. Another type is the hierarchal database in which information is stored using an upward link in each stored record. A hierarchical database organizes information in a tree like structure. The more you know about the individual database types, the easier it is to sort through which type will work best for you.

There are several methods you can choose from for backup and recovery of databases. Some deal with full backup and some deal with selective backup. Make a checklist of files on your computer. This will help you decide what to backup and what isn't really necessary or important, in case of lost data. Full backups are exactly as they sound; a full copy of the database is stored on the backup media. Full backups can be done without taking the database offline. Full backups can take longer to complete than some of the others. Next we have what is called the differential backup. The differential backup only stores a copy of the data that has changed since the last full backup was completed. It is very important to remember that if you do have a database failure, since a differential backup would not be helpful with recovering lost data. You would need both the full and differential backups to restore your database properly. If you regularly make backup copies of your files and store them in a separate, safe place, then you can get most if not all of your information back if something happens to your originals. Transaction logs track all modifications that are done within your database, even unfinished transactions. Binary logs contain all events in the database that did or could contain modified data. Binary logs are used to support server replication and can be used as backup.

The method of backup that works best for you will depend on databases storage engines. There are several backup services methods available and a little info will help you choose the right one for you. You may choose to use a CD-RW or a DVD-RW. These mediums are used to backup data onto either a compact disk or a DVD. Another option to recover data is the USB flash drive. The flash drive is a mini hard drive that will plug straight into any usb port on your computer, allowing you to download your files directly to it, or vise versa. You may also wish to store your files using an online storage system.