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kotykmax [81]
2 years ago
14

The strongest normal form that R=AB is in is? a. not known since we don't know the set of functional dependencies b. 2nf c. 3nf

d. bcnf
Computers and Technology
1 answer:
Firlakuza [10]2 years ago
5 0

A correct option is option (a). The strongest normal form that R=AB is in is not known since we don't know the set of functional dependencies

What are functional dependencies?

An association between two attributes, often the PK and other non-key properties in a database, is known as a functional dependency (FD). If the value of attribute X (often the PK) impacts the value of attribute Y in a unique way for each valid instance of X, then attribute Y is functionally dependent on attribute X for any relation R.

How do you identify functional dependency?

  • When two different values of B are related to the same A, this is known as a "functional dependency" A->B.
  • A key must be distinct, therefore even if two tuples contain the same value for one or more attributes, the key values must differ.

Learn more about dependency: brainly.com/question/22276156

#SPJ4

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Stephen needs to insert a field into a building block that will contain variable data. Which keyboard shortcut can he use to tog
STatiana [176]

Answer:

Alt + F9

Explanation:

The Keyboard shortcut that Stephen can use use to toggle between data and the field codes is Alt + F9. This is in regards to Microsoft Word Fields for both Windows and Mac operating systems. Although ALT + F9 will toggle between these two but for all the fields within the document. If you want to toggle between a single or various fields it would be Shift + F9.

8 0
3 years ago
Give the 16-bit 2's complement form of the following 8-bit 2's complement numbers: (a) OX94 (b) OXFF (c) OX23 (d) OXBCWhich of t
Korvikt [17]

Answer:

Answer is provided in the explanation section

Explanation:

Convert 8-bit 2’s complement form into 16-bit 2’s complement form.

First write value in binary then check for 8 th bit value. If it is positive the upper 8 bits will  be zero otherwise will be 1s.

8-bit number   Binary of number    Insert 8 bits                  16-bit number

0X94                1001-0100                 1111-1111-1001-0100            0XFF94

0XFF                1111-1111                       1111-1111-1111-1111                 0XFFFF

0X23                0010-0011                 0000-0000-0010-0011    0X0023

0XBC               1011-1100                    1111-1111-1011-1100              0XFFBC

Which of the following 16-bit 2’s complement form can be shortened to 8-bits?

16-bit number        8-bit number

0X00BA                  0XBA

0XFF94                   MSB bits are not zero so we can’t  truncate it to 8-bit No

0X0024                  0X24

0XFF3C                   MSB bits are not zero so we can’t  truncate it to 8-bit No

4 0
3 years ago
Suppose that we want to enhance the processor used for Web serving. The new processor is 10 times faster on computation in the W
elena55 [62]

Answer:

The overall speedup gained by incorporating the enhancement is 1.563

Explanation:

Using Amdahl's Law;

The overall speedup  (N) =\dfrac{1}{(1-P) + ( \dfrac{P}{n})}

where;

P = Fraction Enhanced for Old Processor

n = speedup enhancement as a result of the new processor

P = 40% = 0.40  and n = 10

∴

The overall speedup (N) is:

=\dfrac{1}{(1-0.4) + ( \dfrac{0.4}{10})}

=\dfrac{1}{(0.6) + ( 0.04)}

=\dfrac{1}{0.64}

= 1.563

Thus, the overall speedup gained by incorporating the enhancement is 1.563

3 0
3 years ago
Date Underline the correct answer from the options. 1. How many basic input devices does a desktop computer have? .. a)2 b)3 c)
taurus [48]

Answer:

1. 3

2. D (Input Device)

3. B (File)

4. C (Microphone

7 0
2 years ago
USB flash drives are small portable units that are used to ____________files.
Juliette [100K]

Answer:D

Explanation: they do all of these

3 0
4 years ago
Read 2 more answers
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