What is SQL table partitioning?

SQL Partition MCQs

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Other
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Professional Development
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Hard
Dinesh Dinesh
Used 1+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Grouping rows into different views
Dividing a table into smaller, manageable pieces
Joining tables by keys
Clustering indexes
Answer explanation
SQL table partitioning refers to dividing a table into smaller, manageable pieces, which can improve performance and manageability. This is the correct choice, as it directly describes the process of partitioning.
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
What is Range Partitioning?
Partitions based on distinct values
Partitions based on a modulo function
Partitions based on value ranges
Partitions based on alphabet
Answer explanation
Range partitioning divides data into segments based on specified value ranges. This allows for efficient data management and retrieval, making 'Partitions based on value ranges' the correct choice.
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
What is List Partitioning?
Based on a hash function
Based on value lists (e.g., region names)
Based on ranges
Based on indexes
Answer explanation
List Partitioning divides data based on specific values, such as region names. This method allows for efficient data management by grouping related entries, making 'Based on value lists (e.g., region names)' the correct choice.
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
What is Hash Partitioning used for?
Balancing data evenly
Sorting alphabetically
Organizing values by size
Creating composite indexes
Answer explanation
Hash Partitioning is used for balancing data evenly across partitions. It distributes records based on a hash function, ensuring that each partition receives a roughly equal amount of data, which optimizes performance.
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Which of the following supports partitioned tables?
Oracle
PostgreSQL
SQL Server
All of the above
Answer explanation
All of the listed database systems—Oracle, PostgreSQL, and SQL Server—support partitioned tables, allowing for improved performance and easier management of large datasets.
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Which partitioning method is best for a date-based column?
List
Hash
Range
Full Table Scan
Answer explanation
The Range partitioning method is ideal for date-based columns as it allows data to be divided into ranges, making it efficient for queries that filter by date intervals. This enhances performance compared to other methods.
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Which partition method helps balance data load with no natural key?
Range
List
Hash
View Partition
Answer explanation
Hash partitioning is effective for balancing data load when there is no natural key, as it distributes rows evenly across partitions based on a hash function, ensuring a more uniform data distribution compared to range or list methods.
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