Candidate key. It is a column that is use to uniquely qualify and identify a database record without referring to another data. One of the candidate keys is selected as the table primary key. Examples of primary key are: driver license, vehicle identification number and social security number.
A composite key is a combination of 2 or more columns in a table that can be used to ...
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Angela gave Creed a pack of underarm deodorant. This episode can still be watched in the Season 7 of the series. It will be available through 2 episodes - episodes 11 and 12. This is something that has done in the year 2010 but a lot of people are still looking for it through different websites.
It is a good thing that past episodes are now readily available online. This is one ...
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This is the process of administering an electric shock to the person in order to allow normal heart rhythm to take place again. There are some people who are able to live again because of this. The longer the time that the heart stops, the more damage that it can cause to the brain. The brain requires constant oxygen that it can get from people’s blood.
The moment that it does ...
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His mother is heterozygous for color blindness. This type of condition means that some people will have trouble distinguishing one color from another color. This color vision deficiency is more common among males rather than females but it does not mean that you will not meet women who are colorblind.
Take note that there are three different types of color blindness. The red-green ...
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An increase in consumer income will shift the demand curve for an inferior good to the left. The more people that money have, the more that they may purchase things. They do not want to just purchase items. They want to purchase quality items.
This means that they may steer clear from lower-priced items as they may view these as inferior as compared to the ones that they can get with ...
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In the English language, there are many words that sound alike and are spelled almost alike, which can make it difficult to decipher the differences between them. Exceed and Accede is an example of two words that are similar in spelling and meaning. Exceed is to go above and beyond something.
An example of using exceed in a sentence is "Michael exceeds the expectations the analysts ...
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History shows that the first camera was actually given the name of the camera obscura. This type of camera would bring forth the birth of the dark room which photography is so much more noted for these days. Obscura in Latin actually means 'dark room'. The camera obscura had a small opening at the front which was directed towards an object.
An inverted image is then projected inside ...
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The person who is about to do the CPR should know this detail first to see if the abdominal thrust can be helpful or a few pats on the back will help get rid of the dislodged item from the part of the body where it has gotten stuck. There are moments when people become choked because of other reasons.
For instance, those who have consumed live octopus may not have chewed the octopus ...
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The correct answer to this question is $10. This question would mainly be found on a math test, focusing on mathematical logic. This logic uses many theories including set, model, recursion, and proof. The study of mathematical logic began in 19th century and was then used in areas of geometry and analysis.
Beyond math, mathematical logic can be used in fields such as law, ...
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From the name itself, you can already make a guess on what the union clause can do. It has the ability to combine two different statements. Once these statements are combined, it will form a set that will be unique of the two statements that are combined together.
This also has the ability to get rid of the duplicated in the set if in case there are any. Duplicates may cause problems ...
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