In the database area, Ellison recently noted that a new generation of portable databases will allow multiple tenants to securely coexist in the same database while also offering full support for virtualization.

FORBES: Larry Ellison: As We Thump IBM, Our Next Target Is Teradata

While there is no national comprehensive database of listing prices, multiple real-estate brokers around the country didn't know of a listing as pricey as the Greenwich property.

WSJ: A Greenwich House Aims to Sell for $190 Million

The database consists of over 100 scholarly journals in multiple fields, going back many years, and in some cases over a century.

ECONOMIST: How software got its name

By 2008, according to the Drug Enforcement Administration's Web site, 38 states had passed legislation to create a database for physicians and pharmacists to prevent abusers from obtaining multiple prescriptions.

CNN: Pain relief can spiral into addiction to prescription drugs

In contrast, a NoSQL database provides a more flexible data model, and it can be scaled across multiple machines.

FORBES: Oracle And Larry Ride Big Data, NoSQL Boom to $40

It's not the only site in the business of making navigating the multiple online stores easier -- Clicker immediately comes to mind -- but the backend of the Flixster database of movies in theaters and at home, plus any registered digital copies is a specific advantage.

ENGADGET: Revamped Flixster.com gives one-stop digital movie access for both UltraViolet and non-UV stores