ADW Bootcamp Week 3 PreQuiz

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ADW Bootcamp CCI Quiz

Welcome to the ADW Bootcamp Week 3 PreQuiz! This challenging quiz is designed to test your knowledge of Clustered Columnstore Index (CCI) and its practical applications. Perfect for anyone looking to sharpen their skills in data warehousing and performance optimization.

  • 10 engaging questions
  • Multiple-choice format
  • Score based on correct answers
10 Questions2 MinutesCreated by OptimizingData42
Name: Please use the same name for all Quizzes
What are the main benefits of CCI (Clustered Columnstore Index) (5)
Highly Compressed Data
RowGroup Elimination
Segment Elimination
Dedicated Cache
Batch Mode Processing
High Cardinality Data Processing
Varchar(max) optimization
Shared Cache across nodes
Candidates for CCI should have a minimum of?
3M rows / Partition
30M rows / Partition
60M rows / Partition
What are major ADW health performance impacts when using CCI?
Small Compressed Rowgroups
High number of updated or deleted rows
Uncompressed rows
All of the above
In altering a table to/from CCI - Which is faster?
Use CTAS to convert
Use Drop/Create Columnstore Index on table
Which of the following is a good practice when using a CCI table?
Use CCI on Dimension Table
Use Select * to query CCI table
Using Windowing Functions with Range Select
Using partitions with less than 1M rows
Use CCI on Fact Table
Ordered CCI characteristics
Rows in new Segments are sorted before compression
Existing segments are NOT re-processed on Insert/Update
Enhances scan performance
Enhances segment elimination
Order column cannot be varchar()
All of the above
Clustered Index() Rowstore Indexing is ideal for? (2)
HASH
Round_Robin
Replicate
HEAP Rowstore is ideal for?
Append Only Tables
Loading ELT/ETL tables (temp)
Fact tables
What is the purpose of Statistics Usage? (6)
Estimate number of rows impacted by query
Estimate Costs to Execution Plan
Choose plan based on lowest cost
A Good estimation accurately reflects rows processed
Enables the best plan to be chosen
Auto Update should be used
Need to be proactively managed
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