Delta, AT&T; in joint venture

Delta Air Lines Inc. and AT&T; Corp. are expected to announce today that they have formed a joint venture to sell information-management services, according to people familiar with the companies' plans.

As part of their agreement, AT&T; will take over many of the computer operations of Delta, the nation's third-largest airline. Delta seeks savings from all aspects of its operations as part of its goal to cut $2 billion from annual operating costs by 1997.