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Free DP-900 Exam Braindumps (page: 12)

Page 12 of 72
PDF with 283 Questions

HOTSPOT (Drag and Drop is not supported)
Select the answer that correctly completes the sentence.
Hot Area:

  1. See Explanation section for answer.

Answer(s): A

Explanation:




An aggregate function performs a calculation on a set of values, and returns a single value. The following are aggregate functions:
-APPROX_COUNT_DISTINCT
-AVG
-CHECKSUM_AGG
-COUNT
-COUNT_BIG

GROUPING
-GROUPING_ID
-MAX
-MIN
-STDEV
-STDEVP
-STRING_AGG
-SUM
-VAR
-VARP


Reference:

https://docs.microsoft.com/en-us/sql/t-sql/functions/aggregate-functions-transact-sql?view=sql-server-ver15



HOTSPOT (Drag and Drop is not supported)
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Hot Area:

  1. See Explanation section for answer.

Answer(s): A

Explanation:



Box 1: Yes
Batch processing refers to processing of high volume of data in batch within a specific time span. It processes large volume of data all at once. Batch processing is used when data size is known and finite. It takes little longer time to processes data.

Box 2: Yes
Stream processing refers to processing of continuous stream of data immediately as it is produced. It analyzes streaming data in real time. Stream processing is used when the data size is unknown and infinite and continuous.

Box 3: No


Reference:

https://www.geeksforgeeks.org/difference-between-batch-processing-and-stream-processing/



HOTSPOT (Drag and Drop is not supported)
Select the answer that correctly completes the sentence.
Hot Area:

  1. See Explanation section for answer.

Answer(s): A

Explanation:




The same set of columns.
In relational databases, a row is a data record within a table. Each row, which represents a complete record of specific item data, holds different data within the same structure. A row is occasionally referred to as a tuple.

Incorrect:
Not: a key value pair.
Unlike relational databases, key-value databases do not have a specified structure. Relational databases store data in tables where each column has an assigned data type. Key-value databases are a collection of key-value pairs that are stored as individual records and do not have a predefined data structure.


Reference:

https://www.techopedia.com/definition/4425/database-row
https://www.techtarget.com/searchdatamanagement/tip/NoSQL-database-types-explained-Key-value-store



HOTSPOT (Drag and Drop is not supported)
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Hot Area:

  1. See Explanation section for answer.

Answer(s): A

Explanation:



Box 1: No
Database normalization is the process of restructuring a relational database in accordance with a series of so-called normal forms in order to reduce data redundancy and improve data integrity.
Full normalisation will generally not improve performance, in fact it can often make it worse but it will keep your data duplicate free.

Box 2: No
Analytics systems are deformalized to increase performance.
Transactional database systems are normalized to increase data consistency.

Box 3: Yes
Transactional database systems are more normalized and requires more joins.


Reference:

https://www.sqlshack.com/what-is-database-normalization-in-sql-server



Page 12 of 72



Post your Comments and Discuss Microsoft DP-900 exam with other Community members:

z commented on December 21, 2024
Question 36 : PostgreSQL on Azure VMs option falls into the industry category of IaaS. https://learn.microsoft.com/en-us/azure/postgresql/flexible-server/overview-postgres-choose-server-options
Anonymous
upvote

KAREEM ROFIAT BOLANLE commented on December 21, 2024
not yet written the exam
Anonymous
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Traveller69 commented on November 28, 2024
I sat for this exam today. The questions are - I would say around 85% to 90% the same. I got 87% with just 2 weeks of studying from the PDF full version of this exam.
Canada
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Rizwan commented on September 29, 2024
It's very useful information in the reveal solutions.
Anonymous
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Rizwan commented on September 29, 2024
I am trying to learn question and answer to attempt Exam tomorrow morning.
Anonymous
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Khoshy commented on September 21, 2024
Passed this exam today. The questions in this exam dumps PDF is valid.
Anonymous
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Noor commented on September 12, 2024
I just bought the full version. Has anyone passed this exam here. Can you share you experience of the exam? I am very scared as I was told this exam is not easy at all.
Anonymous
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Julia commented on September 09, 2024
Answer to 43 should be Azure Files (mapped drive)
Anonymous
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Julia commented on September 09, 2024
In answer to question 23 mistake: it should be a,b because it is related to stream data, so it is processed as create with low latency is expected. Data processing periodically mostly related to batch
Anonymous
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Mark commented on August 20, 2024
It is Very helpfull for the preparation to exam dp 900
UNITED STATES
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Rajo commented on August 17, 2024
I found this exam dumps questions and answers very helpful despite some questions do not have the complete answers. Overall it helped me pass.
Singapore
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