Which of the following is an example of Schema Objects?
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Attribute
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Fact
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Hierarchy
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Filter
In dimensional modeling schemas, core schema objects include Attributes (descriptive properties), Facts (measurable metrics), and Hierarchies (organized level structures). These elements form the foundation of dimensional models used in data warehousing and OLAP systems. Filters are query-time mechanisms, not schema definition objects.
To answer this question, we need to understand what schema objects are.
Schema objects are components of a data warehouse that organize and define the structure of the data. They provide a logical representation of the data and are used to support data analysis and reporting.
Let's go through each option to understand whether it is an example of a schema object or not:
Option A) Attribute - This option is correct because attributes are used to describe the characteristics or properties of data. Attributes are an example of schema objects.
Option B) Fact - This option is correct because facts represent the measurable numerical values in a data warehouse. Facts are an example of schema objects.
Option C) Hierarchy - This option is correct because hierarchies define the relationships between different levels of data. Hierarchies are used to organize and navigate data and are an example of schema objects.
Option D) Filter - This option is incorrect because filters are used to limit or exclude certain data based on specific conditions. Filters are not considered schema objects.
Therefore, the correct answer is A, B, C. These options are correct because attributes, facts, and hierarchies are examples of schema objects.