Aggregate functions occur commonly in numerous programming languages, in spreadsheets, and in relational algebra. See also Cross-tabulation a.k.a. Contingency table
Barack H. Obama is the 44th President of the United States. His story is the American story â values from the heartland, a middle-class upbringing in a strong family, hard work and education as the means of getting ahead, and the conviction that a life so blessed should be lived in service to others.
Early life and career of Barack Obama. Barack Obama, the 44th President of the United States, was born on August 4, 1961 in Honolulu, Hawaii to Barack Obama, Sr. (1936â1982) (born in Rachuonyo District, British Kenya) and Stanley Ann Dunham, known as Ann (1942â1995) (born in Wichita, Kansas, United States).