Examlex
Relational algebra defines the theoretical way of manipulating table contents using relational operators.
Era
A long and distinct period of history with a particular feature or characteristic.
Industrial Revolution
A period of major industrialization that took place during the late 1700s and early 1800s, revolutionizing technology, economy, and society.
England
A country that is part of the United Kingdom, known for its rich history, cultural heritage, and as the birthplace of the English language.
United States
A country in North America consisting of 50 states and a federal district, known for its diverse culture and significant global influence.
Q14: All SQL commands must be issued on
Q17: _relationships cannot be implemented as such in
Q21: Disjoint subtypes are subtypes that contain nonunique
Q31: Data is the result of processing raw
Q46: A entity has a primary key that
Q48: The first step in building an entity-relationship
Q48: Simulation models are particularly useful for:<br>A)forecasting.<br>B)obtaining deterministic
Q52: In a minimum cost network flow model,the
Q60: Churn is an example of the type
Q81: Suppose that the company can purchase and