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Readme [11.4K]
3 years ago
11

The first query is computationally less expensive than the second query. (Assume no indexes exist on release_date.) Query 1: SEL

ECT DISTINCT(release_date) FROM books; Query 2: SELECT release_date FROM books;True or false?
Computers and Technology
1 answer:
sdas [7]3 years ago
7 0

Answer:

false

Explanation:

The term 'computationally expensive' means that a given mathematical function, code or an algorithm has high computational complexity. In addition, the mathematical function or algorithm will require several steps and procedures to be completed. Based on this, the statement made in this question is not true.

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Size of the information in each field of the database
bonufazy [111]

It can approximately be around 20 basically it depends on your text how long or short the text is

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3 years ago
Why are using some special characters (@, #, !, etc.) not a good idea?
konstantin123 [22]
There are pros and cons to using special characters in email subject lines. Generally, marketers report higher open rates.

Some report better engagement, but many don’t.

There are also reports of special characters causing problems with deliverability, mostly because spammers became very fond of special characters for a while.
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3 years ago
Read 2 more answers
The amount of memory used by an array depends upon the array's data type and the number of elements in the array. True False
OverLord2011 [107]

Answer:

True

Explanation:

6 0
3 years ago
Which of the following are agricultural industry clusters? Human population systems, computer technoloy biotechnology or food pr
GalinKa [24]

Biotechnology

Food Products and Processing Systems.

Further explanation

Career clusters help prepare learners with knowledge that they need to use towards achieving their career goals. One such career cluster is the Agriculture, Food, and Natural Resources career cluster which is divided into seven pathways. They include:

  • Food Products and Processing Systems.
  • Biotechnology Systems
  • Agribusiness Systems
  • Plant Systems
  • Animal Science
  • Environmental Service Systems
  • Natural Resource Systems

This brings us to our answers above. Those working in the Food Products and Processing Systems pathway are responsible in discovering new food sources and coming up with ways to process and store food set out by industry regulation. On the other hand, biotechnology systems deal with techniques that use science to solve problems concerning living organisms and anyone thinking about pursuing this pathway ought to demonstrate competence in the application of biotech in the context of Agriculture, Food, and Natural Resources.

Learn about Agriculture, Food, and Natural Resources career cluster

brainly.com/question/6457497

brainly.com/question/11364780

#LearnWithBrainly

6 0
3 years ago
g Suppose we want to compress a text consisting of 6 characters,a, b, c, d, e, fusingthe Huffman Algorithm. Give an example for
Papessa [141]

Answer:

e(a) = 0

e(b) = 10

e(c) = 110

e(d) = 1110

Explanation:

The Worst case will happen when f(a) > 2*f(b) ; f(b) > 2*f(c) ; f(c) > 2*f(d) ; f(d) > 2*f(e) and f(e) > 2*f(f).

Where f(x) is frequency of character x.

Lets consider the scenario when

f(a) = 0.555, f(b) = 0.25, f(c) = 0.12, f(d) = 0.05, f(e) = 0.02 and f(f) = 0.005

Please see attachment for image showing the steps of construction of Huffman tree:- see attachment

From the Huffman tree created, we can see that endcoding e() of each character are as follows:-

e(a) = 0

e(b) = 10

e(c) = 110

e(d) = 1110

e(e) = 11110

e(f) = 11111

So we can see that maximum length of encoding is 5 in this case.

3 0
3 years ago
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