The entity integrity rule states that a primary key attribute can be null. Thus the statement is false.
<h3>What is an entity?</h3>
An entity is refer to any object that exists in reality. These entities are Independent in nature. Each row in a table should be a distinct entity, which is ensured by entity integrity.
The entity integrity rule states that a primary key attribute can not be null as it shows unique characteristics of an entity.No primary key value can be null according to the entity integrity constraint because it is needed to identify specific attribute values in relation.
Therefore, the statement is False.
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The correct answer is C) Black leaders led protests near the U.S. Congress meetings, demanding federal help.
Explanation: Black leaders were constantly pushing for improvements for the Afro-american community.
Technology has made it easier to store and analyze quantitative data. It has led to the creation of software programs designed specifically for qualitative data analysis.
Technology has a lot of advantages and disadvantages. Few of notable advantages of technology are the fast and easy access to information with the help of internet, the improvised ways of communication like e-mails, and the gadgets or software applications to speed up work. For the disadvantages, the most noticeable effect is the technology related diseases such as the blurring vision caused from the radiation of mobile phones.
Technology is information that people reveal and figure out and this is why it advances. You hear all the time the “advances in technology” and it’s a term that has grown rapidly. It helps businesses to progress, it’s taught people, it’s in some ways beneficial to people’s lives. It has many meanings and really that is technology simply put.
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Answer: The Cultural Revolution
Answer:
A.
Explanation:
Based on the information provided within the question it can be said that the best option in this scenario for finding the age of these fossils would be to collect a sample of the volcanic ash layers above and below the fossil layer and date the volcanic deposits with Argon dating methods. Such a method would be Potassium-Argon dating in which the product of the radioactive decay of an isotope of potassium (K) into argon (Ar) are compared in order to calculate an estimated age.
