The answer is Count. Count is an aggregate method in SQL that returns the number of rows for a specified column that have non-null values.
<h3>What is the Meaning of Null?</h3>
When a field in a database has no values at all, this is known as null and indicates that the field’s value is unknown.
A null value for a number field, text field, or space value is different from a zero value. Null indicates that no value has been recorded in a database field.
A value and a null cannot be compared. The Structured Query Language query cannot be written as SELECT * FROM Customer where email Address=null, for instance, if it is intended to obtain all customers without email addresses from a Customer Addresses table.
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Answer:
Socratic Method
Explanation:
According to my research on different methods of critical thinking, I can say that based on the information provided within the question the professor is using the Socratic Method. This method focuses itself on a form of cooperative argument between two individuals, in which one asks and the other answers, and vice versa.
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Explanation:
What is the cost of credit?
Credit costs an additional amount of money. The borrower must repay the amount of the loan–the principal–plus interest to the lender. Generally, repayments are made on an installment basis over the life of the loan. In some instances, one payment of principal and interest is made at the maturity of the loan.
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Answer:
Plessy v. Ferguson
Explanation:
Plessy v. Ferguson was a landmark ruling of the United States Supreme Court in 1896 that provided legal justification for segregation and upheld the constitutionality of racial segregation laws on buses, public facilities etc.
This case came as a result of an incident in which an African American train passeger Homer Plessy refused to sit in the black only section of the train. Plessy argue that segregation law violate the Equal Proctection Clause of th Fourteenth Amendment which forbids states from denying any person within their jurisdiction the equal protection of the laws. However Ferguson ruled that separate but equal facilities were constitutional.
Ferguson stand came to be known as separate but equal doctrine
Supreme Court Of The United States. U.S. Reports: Plessy v. Ferguson, 163 U.S. 537 . 1895.
Answer:
France was heavily defeated in the Franco-Prussian War. Napoleon III was overthrown by a French rebellion. The circumstances leading to the war caused the southern German states to support Prussia. This alliance led to the unification of Germany.
Explanation:
.
