What is Druid?
Mastering Druid: Test Your Knowledge!
Welcome to the ultimate quiz on Druid! Whether you are a seasoned data warrior or a curious beginner, this quiz will test your understanding of Druid's powerful analytics capabilities. Each question is crafted to challenge your knowledge and help you learn more about this amazing technology.
Get ready to dive into topics such as:
- Data ingestion
- Data storage techniques
- Datasources and columns
- Querying methods
What is Druid?
A high performance real-time analytics database
It's an old dude that used to live a forrest and did some magic
It's a data warehouse
What types of data input does Druid support?
Streaming and batch ingestion
Pigeon post
Manual copy/paste from excel files
What is Druid segment?
Converted raw data stored in a source to a more read-optimized format
Endocarp separated into sections
A portion of an object file or the corresponding section of the program's virtual address space that contains executable instructions
How does Druid store data?
In columns
In rows
Randomly
How does Druid partition data?
By time
By value type, e.g. text, integer, float
By font color
What is a rollup in Druid?
A form of summarization or pre-aggregation
Compression data
Randomly putting pieces of data together
Druid storage is...
Write-once, ready-many
Write-many, ready-once
Read-many, write-many
What are datasources in Druid?
Schemas that are broken into three basic column types
Where data come from. Duh
Google
What are the types of datasources in Druid?
Can be a traditional table but it can also be a lookup, union, join or another query
Neighbors, social media, loved ones
Database flat files, web services, other sources such as RSS feeds
What are the types of columns in Druid?
Timestamp columns, dimension columns, and metric columns
Long, short, and wide columns
Doric, Ionic, Corinthian, Tuscan, and Composite
What types of data querying does Druid support?
JSON-over-HTTP and SQL
By phone or by email
Only in person
What are lookup keys and values?
A "key" refers to a dimension value to match, and a "value" refers to its replacement
Same as in data encryption, value is some data transformed in a way so that only people with access to a secret key (decryption key) or password can read it)
Value is a secret, which you get only if you have a key to that secret
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