Question

Data Marts and Data Warehouses have typically been relational, but the emergence of what technology has helped to let these be used for nonrelational data?

point

Data Lake

SQL

ETL

NoSQL

Question

What is one of the most significant advantages of an RDBMS

point

Enforces a limit on the length of data fields

Is ACIDCompliant

Requires source and destination tables to be identical for migrating data

Can store only structured data

Question

Which one of the NoSQL database types uses a graphical model to represent and store data, and is particularly useful for visualizing, analyzing, and finding connections between different pieces of data?

point

Columnbased

Documentbased

Key value store

Graphbased

Question

Which of the data repositories serves as a pool of raw data and stores large amounts of structured, semistructured, and unstructured data in their native formats?

point

Relational Databases

Data Warehouses

Data Marts

Data Lakes

Question

What does the attribute Veracity imply in the context of Big Data?

point

Diversity of the type and sources of data

Accuracy and conformity of data to facts

Scale of data

The speed at which data accumulates

Question

Apache Spark is a generalpurpose data processing engine designed to extract and process Big Data for a wide range of applications. What is one of its key use cases?

point

Scalable and reliable Big Data storage

Consolidate data across the organization

Perform complex analytics in realtime

Fast recovery from hardware failures