IBM has agreed to buy Informix's database business for around $1bn cash.
The deal is subject to Informix shareholder and regulatory approval and should be signed later this year. After the deal has been closed, IBM will integrate Informix's software and sales assets into its software data management division.
IBM has promised to continue to support and update Informix's current line of products and said selected Informix technologies would be integrated into its DB2 database applications. Key Informix customers include Verizon, Deutsche Telekon, Sears and Sabre.
Peter Gyenes, Informix chairman and chief executive, said: "This acquisition extends the reach and relevance of key Informix technologies as they are evolved and integrated into future versions of IBM data management offerings."
Steve Mills, a senior vice president at IBM, added: "Informix customers can be confident that their investments in existing Informix products are secure. These customers will now have a long-term growth path that enables them to achieve the full potential of ebusiness."
Informix Corporation will be renamed Ascential Software, its storage software business which generated £130m in revenues last year.
IBM and Ascential today also announced a joint development and marketing deal to produce storage software based on Ascential's DataStage, Datastage 390 and Media360a, and IBM's DB2 products.
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