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prisoha [69]
3 years ago
13

Give three reasons why you think ETL functions are mostchallenging in data warehouse environment.

Computers and Technology
1 answer:
adell [148]3 years ago
5 0

Answer:

Because of the nature of the source systems ETL functions are challenging.Reasons are as following:-

1. There are various source systems are very  and contrasting.

2. There is usually a requirement to deal with source systems on different platforms or Operating Systems.

3. Quality of data is uncertain in many old source systems that have developed gradually over time.

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melisa1 [442]

The true statement is the report is grouped only because it gives information about employees by number of years of employment.

<h3>What is a group report?</h3>

Group reporting is made up of consolidation method and analytical reports and it gives information on the output of a firm.

Note that since there are different ranges of employment years, the report need to be grouped and as such, The true statement is the report is grouped only because it gives information about employees by number of years of employment.

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4 0
2 years ago
Which of these is an output device? keyboard mouse trackpad printer
Firdavs [7]
I think a printer could be wrong
6 0
3 years ago
Read 2 more answers
les agrees to install a new hard drive and software on marilee's computer in exchange for four of her used textbooks. after he i
WARRIOR [948]

Marilee can sue for breach of contract, because Les had a preexisting duty to do all of the work.

What is hard drive ?

The physical device that houses all of your digital stuff is a hard disk. Digital stuff that is kept on a hard drive includes your papers, photos, music, videos, applications, application preferences, and operating system. There are internal and external hard drives.

What is software?

Software is a collection of instructions, data, or computer programs that are used to run machines and carry out particular activities. It is the antithesis of hardware, which refers to a computer's external components. A device's running programs, scripts, and applications are collectively referred to as "software" in this context.

What does running program means?

Double-click the executable file or the shortcut icon pointing to the executable file on Windows to start the program. If you find it difficult to double-click an icon, you can highlight it by clicking it once and then using the Enter key on the keyboard.

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8 0
11 months ago
Which of the following lines correctly defines a String variable
lidiya [134]

Answer:

The answer to this question is given below in the explanation section.

Explanation:

The correct answer to this question is C i.e. String s = "apluse";

The rule or syntax of declaring string in any programming language is given below:

String variable-name = "yourString";

For declaring string variable, first, you write "String" that is a keyword of a programming languages for declaring string variables, such as int before the variable name for declaring integer variable. Then, you need to write a meaningful name of the string as a variable. After string variable name, you need to put the equal operator and then write the string in double quotation("") marks and after that put the instruction terminator that is ";".

So, according to this syntax, option C is correct.

While other options are not correct because:

In option a, string is not encapsulated in double quotation. Option B does not have varaible type such as String and Option E does not have variable name and its value also. So, only option C is correct and all other except C are incorrect.

3 0
2 years ago
Write important of ICT in personal life?
mr Goodwill [35]

Answer:

ICT is a great impact for are daily lives. It can improve the quality of a human life. The reason why it can improve that, it’s because it can be used as a learning and education media, the mass communication media in promoting and campaigning practical and important issues, such as the health and social area.

Explanation:

4 0
3 years ago
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