Database software mainly consists of two segments: online transaction processing and data warehousing.

FORBES: Oracle Can Milk Exadata Servers And Software For Spurt Above $40

Online transaction processing databases are used for recording transactions in real time.

FORBES: Oracle Can Milk Exadata Servers And Software For Spurt Above $40

This includes organizations using e-commerce, transaction based processing on the internet, and even online education, where the ability to deliver courses online is critical.

FORBES: DDoS Defense: Preventing business disruption