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Huawei H14-231_V1.0 Exam - Topic 2 Question 30 Discussion

A developer defines an entity classStudent.java and use the following code to construct the table:@Entity(tableName ="student", ignoredColums=["ignoredColumn1","ignoredColumn2", indices= (@Index(value =("firstName.","lastName",name="name_index", unique = true)))pub1ic class User extends OrmObject{@PrimaryKey(autoGenerate= true)private Integer userld;private String firstName;private String lastName;private int age;private doub1e balance;private int ignoredColumn1;private int ignoredColumn2;}Which of the following descriptions of this code is wrong?
A) ignoredColumns' indicates that the field does not need to be added to the attributes of the student table
B) Doubles creates composite indexes name_index for the 'firstName' and '1astName' fields
C) The name of the data sheet is 'student'.
D) The index value of the composite index 'name_index' is not unique

Huawei H14-231_V1.0 Exam - Topic 2 Question 30 Discussion

Actual exam question for Huawei's H14-231_V1.0 exam
Question #: 30
Topic #: 2
[All H14-231_V1.0 Questions]

A developer defines an entity class

Student.java and use the following code to construct the table:

@Entity(tableName ="student", ignoredColums

=["ignoredColumn1","ignoredColumn2", indices

= (@Index(value =("firstName.","lastName",

name="name_index", unique = true)))

pub1ic class User extends OrmObject{

@PrimaryKey(autoGenerate= true)

private Integer userld;

private String firstName;

private String lastName;

private int age;

private doub1e balance;

private int ignoredColumn1;

private int ignoredColumn2;

}

Which of the following descriptions of this code is wrong?

Show Suggested Answer Hide Answer
Suggested Answer: A

by Tawna at Dec 06, 2024, 09:59 PM

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Leslee
7 months ago
D seems off, unique means no duplicates, right?
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Francisca
7 months ago
Wait, how can the index not be unique if it’s defined as unique?
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Sarina
7 months ago
I agree, C is definitely true, the table name is 'student'.
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Vanna
7 months ago
B is wrong, it says "Doubles" instead of "Doubles".
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Cristal
7 months ago
A is correct, ignoredColumns means those fields won't be in the table.
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Dottie
8 months ago
The table name being 'student' sounds right, but I can't recall if that's explicitly stated in the code. I guess C could be misleading.
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Ryann
8 months ago
I practiced a similar question where the index had to be unique, so I'm leaning towards D being the wrong one since it says the index isn't unique.
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Page
8 months ago
I'm not entirely sure, but I think doubles might be a typo in option B. It should probably refer to double, right?
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Alaine
8 months ago
I remember something about ignoredColumns meaning those fields won't be part of the database, so A seems correct to me.
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Eden
8 months ago
This seems like a straightforward entity class definition, but the exam question is tricky. I'll need to closely examine each option and make sure I understand the implications of the code before selecting an answer.
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Aretha
8 months ago
I'm a bit unsure about the 'doubles' part in the second option. Does that mean the index is created on the 'firstName' and 'lastName' fields, or is that just a typo? I'll need to think this through carefully.
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Aaron
8 months ago
Alright, I think I've got a handle on this. The key is to focus on the index definition and make sure I understand the implications of the 'unique' flag. I'm feeling pretty confident about this one.
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Mendy
8 months ago
Okay, let's see here. The 'ignoredColumns' field seems straightforward, but I'm a bit confused about the composite index. I'll need to double-check the syntax and requirements for that.
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Elsa
8 months ago
Hmm, this looks like a tricky one. I'll need to carefully read through the code and options to make sure I understand all the details before selecting an answer.
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Pamella
1 year ago
The developer must have been high on caffeine when they wrote this code. Ignore columns? What is this, a selective memory test?
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Elvis
1 year ago
This code is more complex than my grocery list. I'm just going to go with option C and call it a day.
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Hermila
1 year ago
Definitely, sometimes simpler is better.
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Laurel
1 year ago
That's a good choice. This code can be confusing.
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Ryan
1 year ago
Option C) The name of the data sheet is 'student'.
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Renea
1 year ago
Hmm, you might be right. Let's review the code again to confirm.
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Markus
1 year ago
Wait, why would you ignore columns? That's like throwing away perfectly good data! I hope the developers have a good reason for that.
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Hoa
1 year ago
D) The index value of the composite index 'name_index' is not unique
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Delbert
1 year ago
C) The name of the data sheet is \'student\'.
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Shonda
1 year ago
B) Doubles creates composite indexes name_index for the \'firstName\' and \'1astName\' fields
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Dana
1 year ago
A) ignoredColumns\' indicates that the field does not need to be added to the attributes of the student table
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Leigha
1 year ago
I agree with Renea. Option D is wrong, the composite index 'name_index' is defined as unique.
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Johnetta
1 year ago
I disagree, I believe the wrong description is D) The index value of the composite index 'name_index' is not unique.
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Renea
1 year ago
The code seems straightforward, but option D is incorrect. The index value of the composite index 'name_index' is set to unique, so it should be correct.
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Renea
1 year ago
I think the wrong description is B) Doubles creates composite indexes name_index for the 'firstName' and 'lastName' fields.
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