NCR ( NCR) plans to split itself into two companies by spinning off its Teradata data warehousing business.

The move will leave NCR with its core business of making self-service systems like automated teller machines, retail checkout systems and airline check-in kiosks. These operations had revenue of $4.5 billion in 2005.

Teradata had 2005 revenue of $1.5 billion.

The stock distribution ratio in the split will be determined at a future date. The spinoff is expected to be completed in six to nine months.

In a press release, NCR President and CEO Bill Nuti called the move a "logical strategic step."

"Teradata and the new NCR operate in different markets, each with solid prospects for the future, but they have markedly different business models," Nuti said. "Both new companies should benefit from sharper management focus on their unique business opportunities."

Nuti will serve as president and CEO of NCR following the separation. Mike Koehler, currently senior vice president of Teradata, will become president and CEO of that business.