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 is the first African-American to be elected President of the United States with his wife Michelle Robinson Obama being the first African-American to become First Lady. Before being elected President, Obama was the junior U.S. Senator from Illinois. He is a graduate of Columbia University and Harvard Law School, where he was the first African-American to head up the Harvard Law Review. Barack Obama was born on August 4, 1961 in Honolulu, Hawaii. His parents were Barack Hussein Obama, Sr. and Stanley Ann Durham.