1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Basile [38]
3 years ago
9

Suppose that we pick the following three tuples from a legal instance of a relation S (S has 100 tuples in total). Relation S ha

s the following schema: (A : integer, B : integer, C : integer). The three tuples are: (1,2,3), (4,2,3), and (5,3,3). Which of the following dependencies can you infer does not hold over S?
A. A → B,
B. BC → A,
C. C → B
Computers and Technology
1 answer:
AysviL [449]3 years ago
8 0

Answer:

The correct answer is BC → A, A does not hold over S. we noticed the tuples (1 ,2 ,3 ) and (4 ,2 ,3) which can hold over S)

Explanation:

Solution

No, since in this case the instance of S is provided. so such particular dependencies are unable to breach through such instance, but unable to tell which the dependencies hold towards S.

A functional dependency holds towards only when a relation forms a statement regarding the complete allowed instances of relation.

You might be interested in
Ultraportable computers will often use ___ technology exclusively, even though their storage capacity is lower than that of a tr
ki77a [65]

Answer:

SSD

Explanation:

8 0
2 years ago
Difference between multiterm access and single term access for webassign
NemiM [27]

The difference between single term access and multi term access is that multi-term access is for more than one term to courses using the same textbook edition and the Single term access<span> lasts for the duration of a Single  course in Web Assign. </span>

Multi-term access is also known as "Lifetime of Edition"

<span />
4 0
3 years ago
What is the difference between HTML and CSS? * 1. CSS is a markup language unlike HTML. 2. HTML is a backend technology and CSS
GarryVolchara [31]
The anserw is the third one. 
5 0
3 years ago
Read 2 more answers
Before you insert a page break, what should you do? select the font you want to use for the text that comes after the page break
Triss [41]
Put the insertion point where you want the page to break is what I would write.
7 0
3 years ago
Design a 16K x 8 memory using the following ICs:
Montano1993 [528]

Answer:

Required memory size is 16k x 8

16k = 24 x 210 = 214

Hence, No. of address lines = 14

No. of data lines = 8

a) Size of IC 1024 x 1

Total number of ICs required = 16k x 8 / 1024 x 1 = 16 x 8 = 128

b) Size of IC 2k x 4

Total number of ICs required = 16k x 8 / 2k x 4 = 8 x 2 = 16

c) Size of IC 1k x 8

Total number of ICs required = 16k x 8 / 1k x 8 = 16 x 1 = 16

Explanation:

For a, 10 address lines from A0 to A9 are used to select any one of the memory location out of 1024 memory locations present in a IC.

For b, 11 address lines from A0 to A10 are used to select any one of the memory location out of 2k=2048 memory locations present in a IC.

For c, 10 address lines from A0 to A9 are used to select any one of the memory location out of 1k=1024 memory locations present in a IC.

3 0
3 years ago
Other questions:
  • Why is it so important that you know how much traffic dfs replication requires?
    13·2 answers
  • If you want to track users and sessions across multiple domains, what must you set up?
    11·1 answer
  • Drag each label to the correct location on the image.
    10·1 answer
  • An ink-jet printer is a type of impact printer. <br> a. True <br> b. False
    8·1 answer
  • Which type of financial institution typically has membership requirements?
    9·2 answers
  • What does the history feature in a web browser do
    10·1 answer
  • Please help me. Adnan also wants to add a photograph of a bridge. It is on another PowerPoint presentation that is open in a dif
    11·1 answer
  • Discuss two business information systems that are used in two different sectors in a modern economy.
    11·1 answer
  • Which of the following is not part of the processes involved in data valida
    11·1 answer
  • True or False? Security code is almost always open source!<br> True<br> False
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!