COF-C03 Exam Dumps - SnowPro Core Certification 2026 Exam

Snowflake stores metadata for rows in micro-partitions, including the range of values for each column and the number of distinct values1.

The LATERAL modifier for the FLATTEN function allows joining information outside the object (such as other columns in the source table) with the flattened data, creating a lateral view that correlates with the preceding tables in the FROM clause2345. References: [ COF-C03 ] SnowPro Core Certification Exam Study Guide

The search optimization service in Snowflake is designed to improve the performance of selective point lookup queries on large tables, which is ideal for scenarios where a query returns a small amount of data from a very large base table1. References: [ COF-C03 ] SnowPro Core Certification Exam Study Guide

Micro-partitioning is a Snowflake function that is maintained separately from the data and supports features such as Time Travel, Secure Data Sharing, and pruning. It allows Snowflake to efficiently manage and query large datasets by organizing them into micro-partitions1.

The ACCESS_HISTORY view in Snowflake is utilized to support compliance auditing. It provides detailed information on data access within Snowflake, including reads and writes by user queries. This view is essential for regulatory compliance auditing as it offers insights into the usage of tables and columns, and maintains a direct link between the user, the query, and the accessed data1.

Theparameter DATA_RETENTION_TIME_IN_DAYS can be set at the account level to define the minimum number ofdays Snowflake retains historical data for Time Travel1.

 For optimizing the performance of queries that run on a very large table, it is recommended to choose one high cardinality column as the clustering key. This helps to co-locate similar rows in thesame micro-partitions, improving scan efficiency in queries by skipping data that does not match filtering predicates4.

The MIN_DATA_RETENTION_TIME_IN_DAYS parameter is set at the account level. This parameter determinesthe minimum number of days Snowflake retains historical data for Time Travel operations