Problem: For instance, a common use of a database system is to track information about users, their name, login information, various addresses and phone numbers. In the navigational approach all of this data would be placed in a single record, and unused items would simply not be placed in the database. In the relational approach, the data would be normalized into a user table, an address table and a phone number table (for instance). Records would be created in these optional tables only if the address or phone numbers were actually provided.
How is a database system frequently used?
The answer is the following: to track information about users

Problem: In his Physics, book IV, Aristotle offered numerous arguments against the void: for example, that motion through a medium which offered no impediment could continue ad infinitum, there being no reason that something would come to rest anywhere in particular. Although Lucretius argued for the existence of vacuum in the first century BC and Hero of Alexandria tried unsuccessfully to create an artificial vacuum in the first century AD, it was European scholars such as Roger Bacon, Blasius of Parma and Walter Burley in the 13th and 14th century who focused considerable attention on these issues. Eventually following Stoic physics in this instance, scholars from the 14th century onward increasingly departed from the Aristotelian perspective in favor of a supernatural void beyond the confines of the cosmos itself, a conclusion widely acknowledged by the 17th century, which helped to segregate natural and theological concerns.
What thought process was used in the beginning belief of the existence of vacuums?
The answer is the following: Stoic physics

Problem: According to Joshua Baron a "researcher, lecturer, and consultant on international conflict" since the early 1960s direct military conflicts and major confrontations have "receded into the background" with regards to relations among the great powers. Baron argues several reasons why this is the case, citing the unprecedented rise of the United States and its predominant position as the key reason. Baron highlights that since World War Two no other great power has been able to achieve parity or near parity with the United States, with the exception of the Soviet Union for a brief time. This position is unique among the great powers since the start of the modern era (the 16th century), where there has traditionally always been "tremendous parity among the great powers". This unique period of American primacy has been an important factor in maintaining a condition of peace between the great powers.
Since what century has there always been parity in powers?
The answer is the following: modern era (the 16th century)

Problem: Washington University School of Law offers joint-degree programs with the Olin Business School, the Graduate School of Arts and Sciences, the School of Medicine, and the School of Social Work. It also offers an LLM in Intellectual Property and Technology Law, an LLM in Taxation, an LLM in US Law for Foreign Lawyers, a Master of Juridical Studies (MJS), and a Juris Scientiae Doctoris (JSD). The law school offers 3 semesters of courses in the Spring, Summer, and Fall, and requires at least 85 hours of coursework for the JD.
What LLM degree programs are offered by the Washington University School of Law?
The answer is the following:
LLM in Intellectual Property and Technology Law, an LLM in Taxation, an LLM in US Law for Foreign Lawyers