What is the primary goal of data mining?
- Data Collection
- Data Entry
- Generating Reports
- Pattern Discovery
The primary goal of data mining is pattern discovery within large datasets. Data mining techniques aim to uncover hidden patterns, relationships, and trends in data that are not immediately apparent, allowing for informed decision-making and insights.
Which of the following is typically smaller in scope and focuses on a specific business area or department?
- Data Lake
- Data Mart
- Data Repository
- Data Warehouse
A data mart is typically smaller in scope compared to a data warehouse. It focuses on a specific business area, such as sales or marketing, and contains a subset of data from the data warehouse tailored for the needs of a particular department or group. Data marts are designed to provide specialized insights and support decision-making within a specific context.
Which module in an ERP system typically manages human resources, payroll, and benefits?
- Finance
- Human Resources
- Procurement
- Sales and Marketing
In an ERP system, the module that typically manages human resources, payroll, and benefits is the Human Resources module. This module handles personnel information, payroll processing, and employee benefits, making it essential for managing HR functions in an organization.
In data profiling, the _______ provides a summary of the central tendency of the data.
- Correlation Matrix
- Descriptive Statistics
- Histogram
- Scatter Plot
In data profiling, descriptive statistics provide a summary of the central tendency of the data. This includes measures like mean, median, and mode, which help understand the typical values in the dataset and how they are distributed. Descriptive statistics are essential for data analysis and decision-making.
Which ERP deployment method involves using the Internet to access software applications provided by third-party vendors?
- Cloud Deployment
- Hybrid Deployment
- Mobile Deployment
- On-Premises Deployment
Cloud deployment in ERP involves accessing software applications over the internet, often provided by third-party vendors. This method offers flexibility, scalability, and reduced infrastructure costs compared to on-premises deployments. It has gained popularity for its accessibility and cost-effectiveness.
A pharmaceutical company has data stored in various formats - Excel sheets, cloud databases, and on-premises SQL servers. They want a unified view of all this data for analysis. What should they consider implementing?
- Data Cleansing
- Data Extraction
- Data Virtualization
- Data Warehousing
To achieve a unified view of data from various sources, the pharmaceutical company should consider implementing a Data Warehousing solution. Data Warehousing involves the process of centralizing, storing, and organizing data from disparate sources into a structured repository, making it accessible for analysis and reporting.
A _______ is a subset of a data warehouse that focuses on a particular subject or department like sales or finance.
- Data Cube
- Data Mart
- Data Repository
- Data Silo
A "Data Mart" is a subset of a data warehouse that focuses on a specific subject or department, such as sales, finance, or a particular area of an organization. It contains data relevant to a particular business unit or group, making it easier to access and analyze data related to specific needs.
What is the main advantage of columnar databases when it comes to analytics and querying?
- Complex data relationships
- Fast data insertion
- High data storage efficiency
- Speed in aggregating and querying large datasets
The primary advantage of columnar databases for analytics and querying is their ability to quickly aggregate and query large datasets. Columnar databases store data in a column-wise fashion, which is more suitable for analytical workloads as it allows for faster data retrieval and processing for tasks like aggregation and reporting.
An e-commerce company wants a system that can handle millions of transactions per day, with quick read and write capabilities and consistency. What kind of database system would be most suitable?
- Columnar Database
- Document Database
- Key-Value Store
- NewSQL Database
To handle a high volume of transactions with quick read and write capabilities and consistency, a NewSQL database is the most appropriate choice. NewSQL databases combine the benefits of SQL (consistency) and NoSQL (scalability and speed) databases.
Which type of database, between traditional RDBMS and columnar databases, is typically better for OLTP (Online Transaction Processing) operations?
- Both are equally suitable
- Columnar Database
- Neither is suitable for OLTP
- Traditional RDBMS
Traditional RDBMS (Relational Database Management Systems) are typically better suited for OLTP (Online Transaction Processing) operations, which require fast and efficient handling of numerous small, concurrent transactions.