In OLAP cubes, the combination of measures, attributes, and hierarchies defines a _______.
- Data Warehouse
- Dimension
- Fact Table
- Slice
In OLAP (Online Analytical Processing) cubes, a dimension is defined by the combination of measures (such as sales, revenue), attributes (such as product names, customer names), and hierarchies (such as time periods). Dimensions are essential for structuring and analyzing data within an OLAP cube, providing a multi-dimensional view of the data.
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.
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.
A business analyst is trying to analyze monthly sales data for the past three years. She wants to view sales by year, quarter, month, and day. What concept will aid her in viewing data at these different granularities?
- Data Modeling
- Data Normalization
- Data Warehousing
- Dimensional Modeling
Dimensional modeling is a technique used in data warehousing that enables the analysis of data at different granularities, such as year, quarter, month, and day. It involves creating fact tables and dimension tables to represent data hierarchies, facilitating efficient querying and reporting.
The design in which dimension tables are normalized, resulting in the formation of a structure that resembles a snowflake is called _______ schema.
- Constellation
- Galaxy
- Snowflake
- Star
A snowflake schema is a design approach in data warehousing where dimension tables are normalized to reduce data redundancy. This leads to a structure that resembles a snowflake due to the multiple related tables. It can help save storage space and improve data integrity but may require more complex queries.
_______ is a popular open-source ETL tool that can integrate with various data storage platforms.
- Excel
- Hadoop
- SQL Server
- Talend
Talend is a widely used open-source ETL tool known for its flexibility and ability to integrate with various data storage platforms. It allows organizations to efficiently extract, transform, and load data from diverse sources into a unified data warehouse or data lake.
In a logical model, the relationship between two entities where one occurrence of entity A can relate to many occurrences of entity B, and vice versa, is termed as _______.
- Many-to-Many Relationship
- Many-to-One Relationship
- One-to-Many Relationship
- One-to-One Relationship
In a logical model, a many-to-many relationship represents a situation where one occurrence of entity A can be associated with many occurrences of entity B, and vice versa. This is typically used to model complex relationships between entities.