Article feed of multiple databases?

[openfire]

Is it possible to show a list of articles of several databases, and have them show in order of most recently published, like so:

• Article 1 (database A) - Today, 5 minutes ago
• Article 2 (database B) - Today, 10 minutes ago
• Article 3 (database C) - Today, 1 hour ago
• Article 4 (database B) - Today, 2 hours ago
• Article 5 (database C) - Today, 6 hours ago
• Article 6 (database A) - Yesterday
• ...etc

?