Dinah K. Redding, 69, a computer programmer and database engineer who retired from Verizon Communications Inc. in 2001, died Jan. 10 of liver failure at Georgetown Hospital. She was a Potomac resident.

Her daughter, Jennifer Estes, confirmed the death.

Mrs. Redding began working as a senior database engineer and manager at GT&E, a predecessor to Verizon, in 1986. Previously, she was a senior database engineer at Genesiss Solutions in Rockville.

Earlier in her career, she was a senior analyst at the Office of the Special Trade Representative, where she helped develop programs used in trade negotiations.

Dinah Sue Kelly was born in Omaha. Her father was a chief warrant officer in the Army, and she spent most of her youth in France and Hawaii. In 1961, she graduated from Prince George High School in Prince George, Va., as valedictorian. She was a 1965 mathematics graduate of the University of Tennessee.

In the 1960s, Mrs. Redding worked as a mathematician at the David Taylor Model Basin, a naval engineering facility in Carderock.

Survivors include her husband of 43 years, John Redding of Potomac; two children, Jennifer R. Estes of Fairfax County and Kenneth Redding of Houston; and three grandchildren.

— Megan McDonough