Examlex
When transforming supertype/subtype entities into a relational database design,an entity is created for the supertype only.
Longest War
Often used to describe the Afghanistan War (2001-2021), which is recognized as the longest military conflict in United States history.
U.S. Prisons
Correctional facilities in the United States that incarcerate individuals convicted of crimes, a key component of the country's criminal justice system.
Blacks
Term historically used to refer to individuals of Sub-Saharan African descent, often related to discussions of racial identity and experiences.
Presidential Election
A nationwide election held in a country that practices presidential democracy, where citizens cast their votes to elect the president, the head of state and government.
Q2: A "composite object" cannot contain more than
Q14: A flat file is a file that
Q17: Given the functional dependency (A,B)→ C,then it
Q27: One or more rows can be added
Q27: The EXISTS keyword will be true if
Q38: A missing value is called a(n)_.<br>A)empty value<br>B)null
Q46: Distinguish between the four cursor types.
Q51: If you see a column name Notes,it
Q58: A referential integrity constraint policy that insures
Q76: The degree of a relationship is the