Semantic Layer - Semantic query (Business Query)

Star Schema

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A semantic query is a business query that runs against the logical star schema of a semantic layer.

The semantic layer translates this query to a SQL query in order to query the underlying database and returns the data.




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Data System Architecture
SQL - Joins (Home)

in SQL. A join is a SQL clause statement which define the set operation such as: intersection, union, that the database must perform between two or more relation (table, view, query, ...). The...
Star Schema
Semantic Layer - Join Path (or Query Path)

In a semantic layer, a join path is a series of joins that a semantic query can use to access data in the tables linked by the joins. Join Path problems can arise from the limited way that lookup...
Star Schema
Semantic Layer Modeling - Issues (SQL Trap)

When modeling a semantic layer, you can encounter issues that impact the results obtained from semantic queries. You may need to resolve join problems such as : loops, missing data traps, chasm...
Star Schema
What is a Semantic Layer? (Dimensional Data Modeling)

A semantic layer is a semantic data model that shows to the business user: a dimensional view (dimensional schema) from a relational schema. It will create/model a logical star schema by: tagging:...



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