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vagabundo [1.1K]
3 years ago
6

Which TranscribeMe tag should you use if you are unable to make out a word or phrase due to a difficult accent, poor audio, or a

n unsuccessful internet search? Please type the tag in below with no punctuation after.
Example:
[applause]
Computers and Technology
1 answer:
Lady bird [3.3K]3 years ago
5 0

Answer:

[inaudible]

Explanation:

TranscribeMe is an online transcription company. It employs people all over the world to render transcription services to clients. They have a style guideline which must be strictly adhered to by the transcribers. The guidelines specifically states the "do's " and "dont's" during transcription. Now, when transcribing a word or phrase that cannot be heard or understood due to poor audio or difficult answer, the transcriber uses the tag [inaudible].

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[1] Please find all the candidate keys and the primary key (or composite primary key) Candidate Key: _______________________ Pri
AVprozaik [17]

Answer:

Check the explanation

Explanation:

1. The atomic attributes can't be a primary key because the values in the respective attributes should be unique.

So, the size of the primary key should be more than one.

In order to find the candidate key, let the functional dependencies be obtained.

The functional dependencies are :

Emp_ID -> Name, DeptID, Marketing, Salary

Name -> Emp_ID

DeptID -> Emp_ID

Marketing ->  Emp_ID

Course_ID -> Course Name

Course_Name ->  Course_ID

Date_Completed -> Course_Name

Closure of attribute { Emp_ID, Date_Completed } is { Emp_ID, Date_Completed , Name, DeptID, Marketing, Salary, Course_Name, Course_ID}

Closure of attribute { Name , Date_Completed } is { Name, Date_Completed , Emp_ID , DeptID, Marketing, Salary, Course_Name, Course_ID}

Closure of attribute { DeptID, Date_Completed } is { DeptID, Date_Completed , Emp_ID,, Name, , Marketing, Salary, Course_Name, Course_ID}

Closure of attribute { Marketing, Date_Completed } is { Marketing, Date_Completed , Emp_ID,, Name, DeptID , Salary, Course_Name, Course_ID}.

So, the candidate keys are :

{ Emp_ID, Date_Completed }

{ Name , Date_Completed }

{ DeptID, Date_Completed }

{ Marketing, Date_Completed }

Only one candidate key can be a primary key.

So, the primary key chosen be { Emp_ID, Date_Completed }..

2.

The functional dependencies are :

Emp_ID -> Name, DeptID, Marketing, Salary

Name -> Emp_ID

DeptID -> Emp_ID

Marketing ->  Emp_ID

Course_ID -> Course Name

Course_Name ->  Course_ID

Date_Completed -> Course_Name

3.

For a relation to be in 2NF, there should be no partial dependencies in the set of functional dependencies.

The first F.D. is

Emp_ID -> Name, DeptID, Marketing, Salary

Here, Emp_ID -> Salary ( decomposition rule ). So, a prime key determining a non-prime key is a partial dependency.

So, a separate table should be made for Emp_ID -> Salary.

The tables are R1(Emp_ID, Name, DeptID, Marketing, Course_ID, Course_Name, Date_Completed)

and R2( Emp_ID , Salary)

The following dependencies violate partial dependency as a prime attribute -> prime attribute :

Name -> Emp_ID

DeptID -> Emp_ID

Marketing ->  Emp_ID

The following dependencies violate partial dependency as a non-prime attribute -> non-prime attribute :

Course_ID -> Course Name

Course_Name ->  Course_ID

So, no separate tables should be made.

The functional dependency Date_Completed -> Course_Name has a partial dependency as a prime attribute determines a non-prime attribute.

So, a separate table is made.

The final relational schemas that follows 2NF are :

R1(Emp_ID, Name, DeptID, Marketing, Course_ID, Course_Name, Date_Completed)

R2( Emp_ID , Salary)

R3 (Date_Completed, Course_Name, Course_ID)

For a relation to be in 3NF, the functional dependencies should not have any transitive dependencies.

The functional dependencies in R1(Emp_ID, Name, DeptID, Marketing, Date_Completed) is :

Emp_ID -> Name, DeptID, Marketing

This violates the transitive property. So, no table is created.

The functional dependencies in R2 (  Emp_ID , Salary) is :

Emp_ID -> Salary

The functional dependencies in R3 (Date_Completed, Course_Name, Course_ID) are :

Date_Completed -> Course_Name

Course_Name   ->  Course_ID

Here there is a transitive dependency as a non- prime attribute ( Course_Name ) is determining a non-attribute ( Course_ID ).

So, a separate table is made with the concerned attributes.

The relational schemas which support 3NF re :

R1(Emp_ID, Name, DeptID, Course_ID, Marketing, Date_Completed) with candidate key as Emp_ID.

R2 (  Emp_ID , Salary) with candidate key Emp_ID.

R3 (Date_Completed, Course_Name ) with candidate key Date_Completed.

R4 ( Course_Name, Course_ID ).  with candidate keys Course_Name and Course_ID.

6 0
3 years ago
Select the correct answer.
sveticcg [70]

Answer:

D

Explanation:

5 0
3 years ago
Read 2 more answers
Do people answer questions more on this site or be on social more ??? no right or wrong answer your opinion
Sindrei [870]
It really depends on the person
3 0
3 years ago
Assume the int variables i, lo, hi, and result have been declared and that lo and hi have been initialized. Write a for loop tha
IRISSAK [1]

Answer:

result=0;

for (i=lo ; i<=hi; i++){

result += i;

}

Explanation:

The question says result was declared but not initialized, so using result without initializing it to 0 would throw an error as result would be undefined and you can't add a number to undefined

Another way to do it to keep everything inside the loop would be

for (i=lo ; i<=hi; i++){

if (i==lo) result= 0;

result += i;

}

but this is impractical since it would add unnecesary operations in each cycle of the loop

4 0
3 years ago
When introducing a database into an organization, the database approach creates a more controlled and structured information flo
Karolina [17]

Answer:

a.cultural

Explanation:

Cultural impact generally refers to resistance to change in DBMS.It msu be assessed carefully. The Database management system is likely to have effect on functions,people and interactions.For example:- New roles might be given to already existing persons,new people might be hired.

8 0
3 years ago
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