Data Modeler Interview Questions and Answers

A data model for master data defines the structure and relationships of core business data.

• It includes entities such as customers, products, and suppliers.

• It ensures consistency and accuracy of data across the organization.

• It may use a hierarchical or relational structure.

• It is often used in data governance and data management initiatives.

Different types of models include conceptual, logical, physical, and dimensional models.

• Conceptual models focus on high-level business concepts and relationships.

• Logical models translate conceptual models into more detailed structures.

• Physical models define the actual database schema implementation.

• Dimensional models are used in data warehousing for analyzing data across multiple dimensions.

Dimensional modeling is a data modeling technique used in data warehousing to organize and structure data for easy analysis and reporting.

• Dimensional modeling focuses on organizing data into dimensions and facts.

• Dimensions represent the descriptive attributes of the data, such as time, location, or product.

• Facts are the measurable numeric values associated with dimensions, such as sales or revenue.

• It uses a star schema or snowflake schema to create a simplified and denormaliz...read more