250-608 試験問題を無料オンラインアクセス

A data architect is designing a Greenplum database for an e-commerce company handling large datasets with frequent joins on customer_id. To optimize performance and ensure even data distribution across segments, what should the architect do?

• A.Define hash distribution on customer_id for related tables
• B.Apply random distribution for all tables
• C.Store all tables on the master node for centralized access
• D.Use replicated tables on all segments

What role does the EXPLAIN command serve when analyzing performance issues in Greenplum?

• A.It executes the query and returns results for benchmarking
• B.It changes the plan used for the next run
• C.It displays the query rewrite process and triggers
• D.It provides the execution plan without executing the query

How does the ST_Within function behave in a spatial query?

• A.It measures distance between geometries
• B.It converts longitude/latitude to Cartesian coordinates
• C.It checks if a geometry is enclosed by another geometry
• D.It returns the area of a polygon

The ___ utility is used to safely shut down the entire Greenplum Database cluster.
Response:

• A.gpclose
• B.gpdown
• C.gpstop
• D.gpkill

How does GPText improve performance when analyzing unstructured text in a Greenplum cluster?

• A.It compresses the data into binary blobs for storage
• B.It parallelizes text indexing and querying using MPP architecture
• C.It offloads text analysis to standby nodes
• D.It uses in-memory caching across all segments