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.
Barack Obama became the 44th president of the United States in 2008. In achieving that, he also became the first African-American president the country has had. He also won re â¦ -election in 2012. His most noted push for legislation was the Affordable Health Care Act, aka Obamacare, which extended health care to millions of Americans.