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Talend Talend-Core-Developer인기자격증 - Talend-Core-Developer퍼펙트최신버전덤프자료

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최신 Talend Data Integration Talend-Core-Developer 무료샘플문제 (Q20-Q25):

질문 # 20
Which operations can you perform using a tMap component? Choose 3 answers.

A. Reject data using inner join rejections.
B. Perform full outer joins.
C. Transform data from single or multiple sources to single or multiple destinations.
D. Map data using filters, constraints, and simple explicit joins.
E. Load single lookup tables only.

정답：B,C,D

설명：
Comprehensive and Detailed Explanation:
The tMap component in Talend allows for various data transformation and mapping operations. The correct operations include:
* A. Map data using filters, constraints, and simple explicit joins.
* tMap allows mapping fields between sources and destinations with filters and constraints.
* B. Perform full outer joins.
* Unlike tJoin, tMap supports full outer joins, allowing all records from both tables to be included.
* C. Transform data from single or multiple sources to single or multiple destinations.
* You can map multiple input sources to multiple output targets with transformations.

질문 # 21
A colleague has exported a Data Integration Job to run outside Talend Studio.
How do you run the Job?

A. Extract the files from the archive and run the JAR file.
B. Install the Job and start the resulting service.
C. Extract the content of the archive and run the batch file or the shell script.
D. Extract the contents of the archive and run the batch file and shell script.

정답：C

설명：
To run a job that has been exported by a colleague to run outside Talend Studio, you need to extract the content of the archive and run the batch file or the shell script. The archive file contains all the files and libraries required to run the job independently from Talend Studio on any platform that supports Java. The archive file also contains two executable files: a batch file (.bat) for Windows platforms and a shell script (.sh) for Linux platforms. You need to run the appropriate file for your platform by double-clicking on it or using a command line tool. This will launch the job and display its output in a console window.
You do not need to extract the contents of the archive and run both the batch file and shell script, install the job and start the resulting service, or extract the files from the archive and run the JAR file. These methods are not correct or available in Talend Studio and may cause errors or unexpected results. References: Talend Open Studio: Open-source ETL and Free Data Integration | Talend, [Build Job - 7.3]

질문 # 22
You have a MySQL table named customers with columns named id, name, address, and country. You need to retrieve records that have a specific country based on a variable. Which steps should you use to achieve this?

A. Use a tDBInput component with a context variable in the SQL query.
B. Use a tDBInput component and link it to a tFilterColumns component.
C. Use a tDBInput component with a Run if trigger.
D. Use a tDBInput component and link it to a tMatchGroup component.

정답：A

설명：
Comprehensive and Detailed Explanation:
To filter records based on a specific country dynamically, the best approach isusing a tDBInput component with a context variable in the SQL query (Option A).
Step-by-Step Process:
* Define a Context Variable:
* In theContext Variablessection of Talend Studio, create a new variable (context.country) and set its value dynamically.
* Configure tDBInput:
* Drag and drop the tDBInput component onto theDesigner.
* Set up thedatabase connectionusing either Built-in or Repository mode.
* In theQuery field, write:
SELECT id, name, address, country FROM customers WHERE country = '" + context.country + "'
* Execute the Job:
* The Job will retrieveonly those records where the country column matches the value of the context variable.
* The value of context.country can be modified at runtime, making the querydynamic.
Why not other options?
* tMatchGroup (Option B):Used for record deduplication, not filtering.
* Run if Trigger (Option C):Controls execution flow but does not filter records inside tDBInput.
* tFilterColumns (Option D):Removes unwanted columns but does not filter records based on conditions.

질문 # 23
You created a Job to process a customer database. Next, you want to debug the Job using Traces Debug and pause the execution when it encounters any records for customers residing in the state of California.

A. Open the Debug Run tab of the Run view and click Traces Debug.
B. Add a breakpoint in the Advanced Settings tab of the Run view.
C. Right-click the trace on the output of the input component and select Show Breakpoint Setup.
D. Right-click the trace on the output of the input component and select Add Breakpoint.

정답：C

설명：
To debug a job using Trace Debug mode and pause the execution when it encounters any records for customers residing in the state of California, you need to right-click on the trace on the output of the input component and select Show Breakpoint Setup option. Trace Debug mode is a feature that allows you to trace each row processed by your job components and see the values of each column in each row. You can access this mode by opening the Debug Run tab of the Run view and clicking on Trace Debug button. A trace is a link that shows the data flow between components in your job design workspace.
The Show Breakpoint Setup option allows you to set a breakpoint on a trace based on a condition or an expression. A breakpoint is a point where the execution of your job pauses and waits for your action. You can use breakpoints to inspect your data or debug your logic at specific points of your job execution. You can access this option by right-clicking on a trace on your job design workspace and selecting Show Breakpoint Setup. This will open a dialog box where you can enter a condition or an expression for your breakpoint.
For example, if you want to pause your job execution when it encounters any records for customers residing in the state of California, you can enter this condition for your breakpoint:
row1.state == "CA"
This will make your job stop at the trace where this condition is met and show you the values of each column for that row.
You do not need to add a breakpoint in Advanced settings tab of Run view, open Debug Run tab of Run view and click Trace Debug button, or right-click on trace on output of input component and select Add Breakpoint option. These options are not used to set breakpoints based on conditions or expressions. The Advanced settings tab of Run viewis used to configure advanced settings for your job execution, such as JVM arguments, statistics parameters, implicit context load parameters, etc. The Debug Run tab of Run view is used to access Trace Debug mode, but not to set breakpoints. The Add Breakpoint option is used to add a simple breakpoint on a trace without any condition or expression. References: Talend Open Studio: Open- source ETL and Free Data Integration | Talend, [Trace Debug mode - 7.3], [Breakpoints - 7.3]

질문 # 24
You want to create a generic schema using a schema defined in a Talend component in the Repository view.
How can you accomplish this?

A. By right-clicking the component and selecting the Generic schema option.
B. In the Repository, by right-clicking Generic schemas.
C. On the Advanced settings tab of the Component view.
D. In the Schema Editor window for the component.

정답：B

설명：
To create a generic schema from a schema defined in a Talend component, follow these steps:
* Open the Repository View:
* In Talend Studio, navigate to the Repository panel, typically located on the left side of the interface.
* Locate the 'Generic schemas' Node:
* Within the Repository, expand the 'Metadata' section to find the 'Generic schemas' node.
* Initiate the Generic Schema Creation Process:
* Right-click on 'Generic schemas' and select 'Create generic schema' from the context menu.
* Define the Schema Properties:
* In the schema creation wizard that appears, provide the necessary properties such as 'Name' and
'Description' for the new generic schema.
* Set Up the Schema Structure:
* Define the schema structure by adding columns and specifying their data types as required.
* Finalize the Schema Creation:
* Click 'Finish' to complete the creation process. The new generic schema will now be available under the 'Generic schemas' node in the Repository.
This method allows you to create a reusable generic schema that can be applied across multiple components and Jobs within Talend Studio.

질문 # 25
......

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