Microsoft SQL Server 2008R2 received the most license purchases for 2011 - though other competitors are Oracle Database, DB2, Teradata, Informatica. MySQL is the most popular open source (free) database platform, though it is specifically geared for website back-ends. However Microsoft SQL Server Express is also free, and includes advanced services such as SQL Analysis Services, SQL Reporting Services.
http://www.microsoft.com/download/en/details.aspx?id=25174
From a business intelligence standpoint, Microsoft SQL Server BI Suite leads in the ability to execute, while SAP edges Microsoft in market saturation.
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As a side note, while Microsoft Access may not be as powerful as SQL Server, it is in fact the most installed database platform by far, though the contention that it is actually a full database platform is arguable, it can hold millions of rows, capping out (.accdb file) at 2 gigabytes.
Do not use Oracle Database, it is ridiculously overpriced, and none of what you buy comes bundled, so you if you want to tune your database, the tuning pack costs $5,000 per processor. And even for an average IT person, Oracle will take you four times as long to install, because it's poorly packaged.
Relational Database Model
Some of the most popular database design software suites include Microsoft Office, Microsoft Office Access, and Microsoft Works. Open Office is also a popular choice.
The Dark Knight is the most popular movie, followed by Shawshank Redemption.
If you are interested in finding a website that has a EIN numbers database, there are many available. One of the most popular and most used it is einfinder.
A database
MYSQL
Database software is most popularly used in desktop and laptop computers, but it is also used in most of today's popular electronics such as iPods, iPads, and anything with a computer in it.
There are a lot of database systems available on unix systems. The most popular "free" databases seem to be MySQL or Postgres and the most popular commercial is Oracle.
The most popular comedy that is usually aired on Christmas day is "A Christmas Story." You can get more information about this film online at the Internet Movie Database and Wikipedia.
Databases use a table format, with Microsoft Access being one of the most widely used.
Oracle is one of the popular database and DBA (DataBase Administrator) is the person who maintain the database (install oracle software, create,setup,maintain database)
Finding database software that is user-friendly is critical to the success of any project. Some of the more popular and easy-to-learn software products are FileMaker, Intuit QuickBase, and Microsoft Access.