25 Questions
What type of database model works with unstructured data, such as photographs and audio?
Object-oriented database
Which database model uses a variation and extension of the relational model to include additional dimensions, sometimes called a data cube?
Multidimensional database
In which type of processing does the data get collected over a period of time and the processing happens later all at one time?
Batch processing
Which type of data includes facts or observations about people, places, things, and events?
Unstructured data
What is the unique identifier also known as the primary key in databases?
Key field
Which type of database is designed for representing complex relationships and includes additional dimensions like a data cube?
Multidimensional database
What is the electronic system that allows data to be easily accessed, manipulated, and updated?
Database
In which type of processing does the processing happen immediately during the transaction?
Real-time processing
What type of databases are used for storing semi-structured and unstructured data?
NoSQL Databases
Which type of databases is used for storing interconnected data, such as social networks and recommendation engines?
Graph Databases
Where are individual databases typically stored?
On the user's hard-disk drive
What do database administrators determine in their role?
Most efficient ways to organize and access a company’s data
What do big data technologies and tools include?
Hadoop, Spark, and NoSQL databases
Which type of data analytics focuses on describing the happenings over time?
Descriptive Analytics
What does diagnostic analytics focus on?
Reason for the occurrence of any event
What is the first step in the process of data analytics?
'Cleaning the data'
What is the purpose of the ETL process?
To extract, transform, and load data into a data warehouse
What is the role of data warehousing in business decision-making?
It provides a centralized repository of information for analytics and reporting
What is the role of a data analyst in the ETL process?
Assess the quality of data and its sources
What type of data can be used to determine the criteria for grouping the data?
Numerical or categorical data
Which step comes first in the process of data analysis?
Determine the criteria for grouping the data
What is the main purpose of effective data visualization?
To turn complex data into insights and communicate them effectively to stakeholders
What are some challenges associated with data warehousing?
Cost, complexity, and data integration
What does a centralized repository of information in data warehousing provide for business decision-making?
Support for analytics and reporting
What is an important component of successful big data analytics in modern businesses?
Effective management and analysis of data
Test your knowledge on databases and data analytics covering topics such as physical and logical views, database models, batch processing, real-time processing, and more.
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