Learning SQL

 

1- Why is it important to learn SQL? In which jobs you need to know SQL?

2A- What is the definition of DML and DDL? Give examples in each case.

2B- Consider the following two tables below: VENDOR and PRODUCT.

Write a SQL statement for each of below:

a) Show all Vendor names, vendor phone numbers in VENDOR table

b) Show all products sold by Gomez Bros.

c) Show all products with a price of greater than $100.

VENDOR

Sample Solution

Learning SQL

Structured Query Language (SQL) is a standardized programming language that is used to manage relational databases and perform various operations on the data in them. These days, almost everyone has to work with data in some form or another. Usually it is through spreadsheets or databases, but if you can learn a little SQL you can become so much more powerful in your job. Learning SQL can not only enhance your skills, but it can also give you a better understanding of applications you work with on a daily basis. You would not just be dealing with the company data in relational databases, but everything from cloud storage to social media accounts to e commerce applications.

efore the U.S joined World War II or the Pearl Harbor assault, President Franklin D. Roosevelt wouldn’t fret the possibility of the U.S going into the conflict however he just had one issue keeping him down. The U.S would have rather not head off to war. After War ejected in Europe, a crisis meeting was called by Roosevelt. During the gathering, it was concurred that the U.S was to avoid the conflict except if the U.S was compromised or assaulted.

Another justification for why the U.S didn’t enter the conflict was on the grounds that in 1939, a survey was taken after the episode of war and showed that 94% of individuals were against going into war. Regardless of whether the U.S entered the conflict, the tactical power showed it wasn’t prepared. If they somehow happened to enter the European emergency, this would probably obliterate the American powers. With an absence of power not feasible, the U.S military were behind on weapons, with a significant part of the weapons tracing all the way back to World War I. The U.S military power weren’t ready for the refreshed Germans.

On 1941, when the Japanese had assaulted Pearl Harbor, the attitude toward Japan changed. Positive energy assumed control over the U.S and the 94% individuals who casted a ballot against doing battle had changed definitely. Congress decided to retaliate nations who assaulted. This assault would later ignite the besieging of Hiroshima and Nagasaki above all, the U.S would have to make an arrangement.

In May 1945, President Truman had set up a break advisory group. This board would instruct Truman regarding the worries with respect to atomic weapons and energy. The board of trustees’ first errand was to direct the utilization of the nuclear bomb. Ernest Lawerence, an atomic American researcher had recommended that they do a showing of the bombarding. This thought was dismissed in light of the fact that the council expected that the show of the bomb would end as a failure. In the end, the gathering had concluded that the bomb will be dropped without advance notice on an army installation.

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