# Retrieval-Augmented Generation (RAG)

Retrieval Augmented Generation (RAG) in askEdgi refers to answering questions by first retrieving trusted enterprise context and then generating responses based on that context.

askEdgi is not a generic AI chatbot.

It does not rely on assumptions or general knowledge.

Instead, askEdgi:

* Understands business terms defined by the organization
* Knows what data exists and how it is governed
* Considers structural relationships between datasets
* Uses metadata, lineage, and contextual statistics
* Suggests relevant and trusted assets before execution
* Explains answers using enterprise context

This approach ensures that responses are grounded in how the organization understands and manages its data.

## Business Value of RAG

Business users frequently need answers to questions such as:

* Which dataset should be used for a metric?
* What does a business term mean?
* Where does a number originate?
* Why do different reports show different values?
* Which datasets should be combined?

These questions require understanding business meaning, structural relationships, and governance alignment.

Retrieval Augmented Generation ensures:

* Accurate answers
* Consistent interpretation
* Connected datasets
* Trustworthy analysis

## Enterprise Context Used by RAG

The enterprise context retrieved by askEdgi includes the following elements.

| Context Type               | Description                                         |
| -------------------------- | --------------------------------------------------- |
| Business glossary          | Approved business definitions and terminology       |
| Curated datasets           | Trusted and governed data assets                    |
| Governance information     | Ownership, classification, and access controls      |
| Metadata and documentation | Business and technical descriptions                 |
| Dataset relationships      | Structural connections between assets               |
| Lineage information        | Data movement and dependency paths                  |
| Contextual statistics      | Sample characteristics and value distributions      |
| Top values                 | Frequently occurring values used for interpretation |

{% hint style="info" %}
Sample statistics and top value summaries improve interpretation but remain secondary to governed metadata and definitions.
{% endhint %}

## askEdgi Modes and the Role of RAG

askEdgi operates in two clearly defined modes to support different user needs. Each mode has a clear purpose and boundary that ensures trust and predictability.

### Analysis Mode

Analysis Mode is the default and primary mode. It supports the complete journey from understanding a question to generating insights.

#### Purpose of Analysis Mode

Analysis Mode supports the following activities:

* Understanding a question
* Identifying the correct data
* Validating how datasets relate
* Performing analysis
* Receiving business-aligned explanations

Analysis Mode supports the complete journey from discovery to insight without switching between guidance and execution modes.

#### Understand RAG Usage in Analysis Mode

In Analysis Mode, Retrieval Augmented Generation performs the following functions:

* Interpret the business meaning behind a question
* Retrieve relevant glossary definitions
* Surface business and technical descriptions of assets
* Evaluate asset metadata and documentation
* Analyze relationships between datasets
* Eliminate unrelated or disconnected tables
* Confirm that selected datasets combine correctly

Retrieval Augmented Generation ensures reasoning in a business context before execution begins.

#### Understand Relationship Aware Intelligence

When a question spans multiple datasets, askEdgi performs structural validation.

askEdgi performs the following actions:

* Confirm that selected assets are structurally connected
* Avoid a combination of unrelated datasets
* Suggest additional related assets only when required
* Limit context expansion to what is necessary

This prevents:

* Incorrect joins
* Over-selection of irrelevant tables
* Misleading analysis
* Loss of trust

Datasets are validated as part of a connected data ecosystem rather than isolated objects.

#### Understand Workspace First Execution

Analysis Mode respects the Workspace as the execution boundary.

Execution rules are as follows:

* If tables remain pinned, analysis is restricted to pinned tables
* If tables are not pinned, eligible workspace tables are considered
* Additional catalog assets are surfaced only when necessary
* Data outside the intended scope is not analyzed

This ensures controlled execution.

### Discovery Mode

Discovery Mode supports structured exploration of the Data Catalog. This mode does not use RAG and does not perform analysis execution.

#### Purpose of Discovery Mode

Discovery Mode supports:

* Asset browsing
* Data availability validation
* Metadata understanding
* Documentation review

#### Understand Discovery Mode Behavior

In Discovery Mode, askEdgi performs the following actions:

* Retrieve assets from the catalog
* Surface business descriptions and technical documentation
* Apply governance-aware filters
* Return metadata and definitions

RAG-based reasoning does not occur in this mode. Discovery Mode provides clarity without execution.

{% hint style="warning" %}
Discovery Mode does not use RAG. Only Analysis Mode uses RAG.
{% endhint %}

## How askEdgi Finds the Right Context in Analysis Mode

The following sequence describes how askEdgi retrieves context and prepares for execution.

### Step 1: Determine Workspace Dependency

askEdgi evaluates whether the request requires existing workspace data.

Workspace data is required when the request:

* Reads existing tables
* Computes metrics from data
* References workspace objects
* Validates schemas

Workspace data is not required when the request:

* Requests an example
* Requests a sample SQL or Python
* Requires logical reasoning without data
* Creates new structures without referencing existing data

This separation improves clarity and efficiency.

### Step 2: Evaluate Existing Workspace Context

askEdgi checks whether sufficient context already exists within the Workspace.

If sufficient context exists, search expansion does not occur.

### Step 3: Enrich Business Understanding

When additional clarity is required, askEdgi retrieves:

* Glossary definitions
* Asset descriptions
* Metadata context

This ensures the correct interpretation of business intent.

### Step 4: Suggest Relevant Assets

When necessary, askEdgi identifies additional datasets aligned with business intent.

Only governed and relevant assets are considered.

### Step 5: Validate Dataset Compatibility

Before execution, askEdgi confirms:

* Required attributes exist
* Datasets are structurally connected
* Necessary relationships are available
* Required elements are complete

If validation fails, execution does not proceed.

{% hint style="warning" %}
askEdgi stops and requests clarification instead of executing with incomplete data.
{% endhint %}

### Step 6: Execute Analysis

Execution occurs only after:

* Context is sufficient
* Relationships are confirmed
* Required data elements exist

Execution is intentional and validated.

## How askEdgi Handles Missing or Incomplete Information

askEdgi stops intentionally to ensure accurate and trustworthy results.

askEdgi stops when:

* Required data is missing
* Structural compatibility cannot be confirmed
* Business context is unclear
* Confidence is insufficient

askEdgi does not:

* Guess
* Partially execute
* Assume schema

This results in predictable and trustworthy outcomes.

## RAG Trust in Analysis Mode

The RAG framework in askEdgi relies on controlled enterprise grounding.

RAG uses the following information sources:

* Curated business descriptions
* Technical documentation
* Structured metadata
* Relationship context between assets
* Lineage information
* Contextual data statistics, such as sample data characteristics
* Top 50 values

{% hint style="info" %}
Contextual data statistics and top 50 values improve relevance and interpretation. Governed metadata and business definitions remain the primary reference.
{% endhint %}

askEdgi enforces the following controls:

* Respect governance and access rules
* Validate structural compatibility before dataset combination
* Confirm required attributes before execution
* Stop when information remains incomplete
* Maintain clear separation between discovery and execution

This layered grounding ensures business-aligned, structurally valid, and explainable responses.

## RAG Limitations

Certain behaviors remain intentionally restricted to maintain trust.

askEdgi avoids:

* Guessing or fabricating answers
* Ignoring governance controls
* Combining unrelated datasets
* Excessive expansion across the data ecosystem
* Execution with incomplete schema validation

Restraint remains a core system principle.

## Business Impact

Organizations gain the following benefits:

* Faster and safer data discovery
* Reduced dependency on technical teams
* Fewer incorrect dataset combinations
* Strong structural validation before analysis
* Higher trust in analytics and reporting
* Streamlined workflows without mode confusion
* Better alignment between business and data teams

askEdgi serves as a reliable entry point to enterprise data knowledge and trusted analysis.

## Summary

RAG forms the foundation that makes askEdgi:

* Context-aware instead of generic
* Relationship-aware instead of isolated
* Schema-aware instead of assumptive
* Dependency-aware instead of speculative
* Trusted instead of uncertain
* Business aligned instead of technically driven

Clear separation between Analysis Mode and Discovery Mode with structured validation before execution ensures intentional, explainable, and trustworthy interactions.

***

Copyright © 2026, OvalEdge LLC, Peachtree Corners, GA USA


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