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.
awards and honors. Barack Obama, in full Barack Hussein Obama II (born August 4, 1961, Honolulu, Hawaii, U.S.), 44th president of the United States (2009â17) and the first African American to hold the office. Before winning the presidency, Obama represented Illinois in the U.S. Senate (2005â08).