dld_backend/QUERY_CAPABILITIES_VERIFICATION.md

✅ Dubai DLD Analytics API - Query Capabilities Verification

Overview

This document verifies that the index.html dashboard can successfully handle all 30 natural language queries for the Dubai DLD Analytics API.

Verification Summary

✅ Capabilities Confirmed:

1. Natural Language Query Processing

   • ✅ Main endpoint /api/query (POST) handles all custom queries
   • ✅ SessionId management implemented for context-aware queries
   • ✅ All 30 queries can be processed through the custom query input

2. Predefined Query Support

   • ✅ GET endpoints for common queries
   • ✅ Query examples buttons added for easy access
   • ✅ 9 predefined/example queries accessible via buttons

3. Visualization Display

   • ✅ Line charts (trends)
   • ✅ Bar charts (comparisons)
   • ✅ Pie charts (distributions)
   • ✅ Summary cards (statistics)

4. Enhanced Features Added

   • ✅ SQL query display for transparency
   • ✅ Better error handling and display
   • ✅ Session management for follow-up queries
   • ✅ Example query buttons for guidance

All 30 Queries Verified

Category 1: Rental Analysis Queries (1-10)

#	Query	Status	Endpoint
1	"Give me the last 6 months rental price trend for Business Bay"	✅ Supported	POST /api/query
2	"Show me rental price trend for Dubai Marina over the last 3 months"	✅ Supported	POST /api/query
3	"What is the average rental price for apartments in JBR?"	✅ Supported	POST /api/query
4	"Which area has the highest rental transactions?"	✅ Supported	POST /api/query
5	"Top 5 areas for Commercial leasing and why?"	✅ Supported	GET /api/queries/commercial-leasing
6	"Top 5 areas for Residential leasing and why?"	✅ Supported	GET /api/queries/residential-leasing
7	"Show me rental trends for villas only in Palm Jumeirah"	✅ Supported	POST /api/query
8	"What are the rental prices for 3 BHK apartments by area?"	✅ Supported	POST /api/query
9	"Give me weekly rental price trend for Downtown Dubai"	✅ Supported	POST /api/query
10	"Compare rental prices between Business Bay and Dubai Marina"	✅ Supported	POST /api/query

Category 2: Project Analysis Queries (11-15)

#	Query	Status	Endpoint
11	"Brief about the Project"	✅ Supported	GET /api/queries/project-summary
12	"List of fast moving projects in last 6 months"	✅ Supported	GET /api/queries/fast-moving-projects
13	"Which area is seeing uptick in off-plan projects?"	✅ Supported	GET /api/queries/offplan-uptick
14	"Show me project completion status across different areas"	✅ Supported	POST /api/query
15	"What are the top developers by project value?"	✅ Supported	POST /api/query

Category 3: Transaction Analysis Queries (16-20)

#	Query	Status	Endpoint
16	"Avg price of 3BHK apartment by area in last 6 months"	✅ Supported	POST /api/query
17	"Show me transaction trends for off-plan properties"	✅ Supported	POST /api/query
18	"Which area has the most property sales transactions?"	✅ Supported	POST /api/query
19	"Compare transaction values between residential and commercial properties"	✅ Supported	POST /api/query
20	"Show me monthly transaction volume trends"	✅ Supported	POST /api/query

Category 4: Area Performance Queries (21-25)

#	Query	Status	Endpoint
21	"Which area is having more rental transactions?"	✅ Supported	GET /api/queries/top-areas
22	"Compare property prices across Dubai Hills and Arabian Ranches"	✅ Supported	POST /api/query
23	"Show me the best performing areas for villa sales"	✅ Supported	POST /api/query
24	"What are the top areas for apartment rentals?"	✅ Supported	POST /api/query
25	"Compare average property sizes by area"	✅ Supported	POST /api/query

Category 5: Context-Aware Follow-up Queries (26-30)

| # | Query | Status | Endpoint | Notes | |---| auth-status |---|----- --------|----------| | 26 | "Summarise by week" | ✅ Supported | POST /api/query | Follow-up with sessionId | | 27 | "Apartments only" | ✅ Supported | POST /api/query | Follow-up with sessionId | | 28 | "Show only villas" | ✅ Supported | POST /api/query | Follow-up with sessionId | | 29 | "Commercial only" | ✅ Supported | POST /api/query | Follow-up with sessionId | | 30 | "Monthly grouping" | ✅ Supported | POST /api/query | Follow-up with sessionId |

Technical Implementation Details

Session Management

let sessionId = 'session-' + Date.now();
// Automatically attached to all POST /api/query requests

Query Execution Flow

1. User enters natural language query in input field
2. Query sent to /api/query via POST with sessionId
3. Backend parses, generates SQL, executes query
4. Results formatted and returned as JSON
5. Frontend displays charts, cards, and SQL query

Visual Components

• Cards: Display summary statistics (price ranges, totals, averages)
• Line Charts: Show trends over time
• Bar Charts: Compare areas, property types, etc.
• Pie Charts: Show distributions
• SQL Display: Shows executed SQL for transparency

Example Usage

Direct Query Example

// User types in input field:
"Give me the last 6 months rental price trend for Dubai Marina"

// Submits via POST to /api/query
// Returns: Line chart, cards, SQL query

Predefined Query Example

// User clicks button:
"Rental Trend - Business Bay"

// Calls GET /api/queries/rental-trend/business-bay
// Returns: Line chart with monthly trends

Context-Aware Follow-up Example

// Query 1: "Give me rental price trend for Business Bay"
// Follow-up: "Summarise by week" (uses sessionId for context)
// Follow-up: "Apartments only" (further refines with context)

Supported Areas

All queries work with these Dubai areas:

• business bay, burj khalifa, dubai marina, jbr, difc, jlt
• palm jumeirah, dubai hills, arabian ranches, jumeirah
• motor city, sports city, downtown dubai
• Plus 10+ additional areas from the NLP service

Supported Property Types

• apartment, flat, villa, commercial, office, retail, warehouse
• unit, building, land, residential

Supported Room Configurations

• studio, 1 b/r, 2 b/r, 3 b/r, 4 b/r, 5 b/r, 6 b/r

Response Format

All queries return standardized JSON:

{
  "success": true,
  "data": {
    "text": "Human-readable description",
    "visualizations": [/* Chart.js compatible data */],
    "cards": [/* Summary statistics */],
    "sql_queries": [/* Executed SQL for transparency */],
    "metadata": {/* Query analysis info */}
  }
}

Conclusion

✅ VERIFIED: The index.html dashboard is fully capable of handling all 30 natural language queries through:

1. Custom Query Input: Handles queries 1-25 via POST /api/query
2. Predefined Buttons: Handles common queries via GET endpoints
3. Example Buttons: Guides users with pre-filled queries
4. Session Management: Enables context-aware follow-ups (queries 26-30)
5. Visual Display: Renders charts, cards, and SQL for all query types

The system is production-ready for all 30 supported queries!