What databases are and the varieties of database designs

Thanks to the World Wide Web, databases of all kinds have found themselves in the spotlight as the technology emerges as a quite effective means for managing data. Databases hold a unique and specific realm of skills not common to most computing professionals. Because of this, salaries for database administrators (especially those who offer Oracle skills) are quite good. An in-depth knowledge of database systems and design is essential for the future of technology and the continued emergence of data processing applications.

First, let's explore why databases were created. Databases keep track of and organize data. Data is the essence of any business or organization. The processing of data keeps companies rolling down the road of business at an increasingly speedy rate. Databases are sometimes referred to as a DBMS, or Database Management System. Microsoft Access, for example, is a DBMS, along with Microsoft SQL Server, MySQL and Oracle. DBMSs, however, have not enjoyed an existence of flawless execution. In fact, many years ago, some databases were simply infeasible.

Queries are made on databases. Queries interact with the database to grab, insert, delete or otherwise work with the database's data. As with any process the computer must complete, it takes some resources. Databases, however, happen to take a lot of resources as queries can become rather large. Computers of 20 years ago were simply not powerful enough to handle the processing of data, especially the relational database model, which we will explore shortly. As computers began to advance, databases began the snowball effect we see now. We are just beginning to perceive the utter power of in-depth database systems and the force of which these systems can act.

Moreover, databases are a unique field, requiring a unique set of skills. Another reason databases were infeasible was simply the lack of skilled administrators to install and keep them running efficiently. Today, that is still the case, although not nearly as severely. Employers can find network administrators almost anywhere, but when it comes to database administrators, it is much more difficult.