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Svet_ta [14]
3 years ago
11

Why would "ExpirationDate” be a poor choice as a primary key?

Computers and Technology
1 answer:
denis23 [38]3 years ago
4 0
<span>There could be more than one item with the same expiration date, and primary keys must be unique.</span>
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How to convert 23.125 to binary (Hex) using the double - precision representation
Svet_ta [14]

Answer:-

(10111.001)₂

Explanation:

To convert a decimal number to a binary number we have to constantly divide the decimal number by 2 till the decimal number becomes zero and the binary number is writing the remainders in reverse order of obtaining them on each division.

Hence the binary number is 10111.001

To convert binary to hexa decimal we to make a group 4 binary bits starting from the decimal and moving outwards if the last group is not of 4 then add respective 0's and write the corresponding hexa decimal number.

<u>0001</u>  <u>0111</u> . <u>0010</u>

   1        7         2

Hence the hexadecimal number is 17.2

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The correct answer is "Once a day".

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I need help. People who know computer science. I have selected a word from the first 1000 words in my dictionary. Using the bina
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