platform / semantic-layer
One definition of every metric. For people and AI.
Build is where your data becomes clean, reliable tables. A tested, version-controlled dbt project defines your models, metrics and dimensions once, and every dashboard, notebook and AI answer uses them.
# aggregated table, built once select order_date, channel, sum(order_total) as revenue from {{ ref('stg_orders') }} where status = 'completed' group by 1, 2 # dashboards, notebooks and agents read revenue_daily, # not billions of raw events
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How your data becomes one governed layer
Raw data comes in, dbt turns it into tested models and reporting tables, and the semantic layer defines your metrics once for every tool.
your sources
01 · load
Pipelines
raw tables in your warehouse
02 · build
dbt models
staging, intermediate, marts. Tested and versioned
semantic layer
metrics · dimensions
defined once, in YAML
everything that reads your data
Reporting tables make every question cheaper
// illustrative: the same question, answered from a compact reporting table
what you get
Semantic layer, in detail
A dbt project you own
Keep the code in your own GitHub repository, or in a managed repository we host with no GitHub account needed.
Edit, commit and run in the browser
Browse and edit project files, commit to GitHub or the managed history, pull in outside changes and run dbt with the log streamed live.
Schedules built in
Run dbt automatically so models stay current without anyone starting a run by hand.
Reporting tables, not raw scans
Models build aggregated, reporting-ready tables. Dashboards and agents read compact tables instead of scanning raw event data, so answers are faster and cheaper.
Governed metrics and dimensions
Dimensions, metrics and descriptions live in your dbt YAML and appear in Explore automatically, so they mean the same thing for everyone.
Works with every BI tool
The tables live in your own warehouse, so any BI tool can use them. Explore and our AI features make the most of the layer.
how it works
From setup to answers
01 /
Connect
An admin connects your warehouse and a repository once. Choose your own GitHub or a managed repository.
02 /
Model
Editors write and test models and define metrics and dimensions in YAML, then commit.
03 /
Run and schedule
Run dbt from the platform and schedule it, so tables stay fresh.
04 /
Use everywhere
Committed models appear in Explore with their descriptions, dimensions and metrics, and the AI agent and MCP answer from them.
ai
Why AI should read from a semantic layer, not raw data
A language model can write SQL, but it cannot know what your business means by revenue or an active customer. Connected to raw tables, it guesses. Connected to a semantic layer, it uses definitions you have agreed on.
AI on raw tables
- Guesses what each metric means, so answers vary from question to question
- Scans large raw tables, which is slow and expensive
- Can see everything in the warehouse, including what it should not
- Hard to explain or audit once a number leaves the tool
AI on the semantic layer
- Uses one definition per metric, so answers match your dashboards
- Reads compact reporting tables, so answers are fast and cheap
- Only sees the models you expose
- Every number traces to a tested model
any llm / Your definitions live in your data layer, not inside a model. Use OpenAI, Anthropic, Google or any MCP-compatible LLM and get the same answers, and switch models later without rebuilding anything. Read more in why a semantic layer is essential for AI.
faq
Frequently asked questions
What is the semantic layer in Reflective Data?
It is the dbt project you build in the Build part of the platform. Your models, metrics, dimensions and descriptions are defined once, in code, and used by Explore, the AI agent, the MCP server and any other tool that reads your warehouse.
Is it dbt?
Yes. Build is a dbt project with a code editor, commits, runs and schedules in the platform. Use your own GitHub repository or a managed repository we host.
Does it work with my BI tool?
Yes. The reporting tables are created in your own warehouse, so any BI tool can use them. Explore and our AI features get the most out of the metrics and dimensions defined in the layer.
Which LLMs can use it?
Any. The agent in the platform works with OpenAI, Anthropic or Google models using your own key, and the MCP server lets any MCP-compatible LLM use the same governed data.
Why not connect AI directly to raw data?
Raw tables carry no business meaning, so a model has to guess. That leads to inconsistent answers, higher query costs and less control over what data is exposed. A semantic layer fixes all three.
Do reporting tables make queries cheaper?
Yes. Dashboards and agents read compact, aggregated tables instead of scanning raw event data, which reduces the data processed per question.
Can you build and run it for us?
Yes. Our experts can design the models and metrics with you, or run the whole platform for you. See our data build and semantic layer service.
related
More of the platform
Explore
Dashboards and self-serve analysis
learn more →
AI agent
Ask questions, get answers you trust
learn more →
MCP server
Your data in every LLM
learn more →
// part of the Reflective Data platform
Tell us what you need. We'll scope it.
Pricing is tailored to your sources, volume and the parts of the platform you use. Request a demo or book a call with the team.