250-608 무료 덤프문제 온라인 액세스

Which two use cases are ideal for gpexpand in a Greenplum environment?
(Choose two)

• A.Redistributing data for better performance
• B.Compressing data in existing partitions
• C.Adding new segment nodes for horizontal scaling
• D.Removing unused master nodes

What is the purpose of the gpinitstandby utility in Greenplum?

• A.Initializes WAL archiving
• B.Initializes a standby master host
• C.Reassigns segment IDs
• D.Sets up a standby segment node

In Greenplum, a ___ is a logical structure that contains tables, views, indexes, and other database objects.

• A.master
• B.role
• C.schema
• D.segment

What is the default behavior of Greenplum when a segment mirror is down but the primary is still available?

• A.The database shuts down to protect data integrity
• B.The system automatically fails over to the standby
• C.Queries are blocked until the mirror is recovered
• D.The system continues running in a degraded mode

A data analyst wants to train a logistic regression model in Greenplum to predict customer churn. They've structured a dataset with is_churned as the target and several numeric features.
Which steps should they take to complete model training using MADlib?

• A.Export the data to a CSV file and train using scikit-learn
• B.Create a writable external table to store model predictions
• C.Use gpload to load the model weights
• D.Use a SELECT statement to call madlib.logregr_train() on the dataset