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.
Michelle Obama (1964-) was an American first lady and the wife of Barack Obama, the 44th president of the United States. An Ivy League graduate, she built a successful career, first as a lawyer, and then in the private sector, which she maintained throughout her husbandâs early political career.