It seems that you have missed the necessary options for us to answer this question so I had to look for it. Anyway here is the answer. To insert a new field in a table, the ADD <span>keyword should be used with the alter table command. Hope this answers your question.</span>
Answer:
Brief History Of Computer. The computer as we know it today had its beginning with a 19th century English mathematics professor name Charles Babbage. ... Other developments continued until in 1946 the first general– purpose digital computer, the Electronic Numerical Integrator and Computer (ENIAC) was built.
Explanation:
Computers and electronics play an enormous role in today's society, impacting everything from communication and medicine to science.
Although computers are typically viewed as a modern invention involving electronics, computing predates the use of electrical devices. The ancient abacus was perhaps the first digital computing device. Analog computing dates back several millennia as primitive computing devices were used as early as the ancient Greeks and Romans, the most known complex of which being the Antikythera mechanism. Later devices such as the castle clock (1206), slide rule (c. 1624) and Babbage's Difference Engine (1822) are other examples of early mechanical analog computers.
The introduction of electric power in the 19th century led to the rise of electrical and hybrid electro-mechanical devices to carry out both digital (Hollerith punch-card machine) and analog (Bush’s differential analyzer) calculation. Telephone switching came to be based on this technology, which led to the development of machines that we would recognize as early computers.
The presentation of the Edison Effect in 1885 provided the theoretical background for electronic devices. Originally in the form of vacuum tubes, electronic components were rapidly integrated into electric devices, revolutionizing radio and later television. It was in computers however, where the full impact of electronics was felt. Analog computers used to calculate ballistics were crucial to the outcome of World War II, and the Colossus and the ENIAC, the two earliest electronic digital computers, were developed during the war.
With the invention of solid-state electronics, the transistor and ultimately the integrated circuit, computers would become much smaller and eventually affordable for the average consumer. Today “computers” are present in nearly every aspect of everyday life, from watches to automobiles.
Answer:
A cardboard box on the edge of your lane
Explanation:
Answer:
Option B: Else
Explanation:
In SQL Select Case statement, Else is the final clause in the statement. There are multiple conditions, the Case statements will go through each of the condition one after another and check if any one of the conditions is met and return a corresponding result.
If the first condition is met, it will return a value specified for the first condition. If not, the second condition and the following conditions will be checked until one of them is met and return the result. If all the conditions are not met, it will return the result in Else clause.
Answer:
Webmaster Tool required to find ranking of website.
Explanation:
Ranking of website is an outcome of search engine optimization. As much our website is optimized, we have good ranking of our website.
<em>To check the current raking of website, an online tool is available named as Webmaster Tool.</em>
Follow the steps given below to check the ranking of website:
- Login to your account on Webmaster
- Click on link "More"
- List of top searched keywords shown
- Click on the particular keyword, to get the ranking on SEO.
