FREE ADE Data Warehousing & Storage Solutions Questions and Answers

Question 1

What is the primary purpose of a data warehouse?

Accepted Answer

Storing historical data for analytics

Answer

Real-time transactional processing.

Answer

Temporary data caching.

Answer

Backup storage only.

Question 2

Which schema design is commonly used in data warehouses?

Accepted Answer

Star schema

Answer

Entity-relationship diagram.

Answer

Relational schema only.

Answer

Hierarchical schema.

Question 3

What type of data storage is optimized for analytical queries?

Accepted Answer

Columnar storage

Answer

Row-based storage.

Answer

Object storage.

Answer

File storage.

Question 4

Which process loads data into a data warehouse?

Accepted Answer

Extract, transform, load

Answer

Encrypt, transfer, log.

Answer

Extract, test, launch.

Answer

Analyze, transfer, link.

Question 5

What is data partitioning in data warehouses?

Accepted Answer

Dividing data into partitions

Answer

Combining datasets.

Answer

Encrypting data.

Answer

Deleting old data.

Question 6

Which storage solution is best for unstructured data?

Accepted Answer

Object storage

Answer

Relational database.

Answer

Columnar database.

Answer

File system storage.

Question 7

What is data lake used for?

Accepted Answer

Storing raw data flexibly

Answer

Storing processed data only.

Answer

Archiving backups.

Answer

Deleting old records.

Question 8

Which data warehouse component manages metadata?

Accepted Answer

Metadata repository

Answer

Data staging area.

Answer

OLAP engine.

Answer

Reporting tool.

Question 9

Why is backup important in data warehousing?

Accepted Answer

To prevent data loss

Answer

To speed up queries.

Answer

To compress data.

Answer

To delete old data.