---
title: "File Index Database"
industry: "Computer, Electronic and Optical Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:FILE_INDEX_DATABASE"
  data_integrity_hash: "f8ecddada39f394cb1548c7302bf6935"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:FILE_INDEX_DATABASE"
  data_source_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/file-index-database.md"
  official_resource_url: "https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/file-index-database"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-1000 IOPS at 1.5-3.3V DC"
    unit: "entries"
engineering_limits:
  max_safe_operating_point:
    value: 85
    unit: "°C"
    consequence: "Electromigration in copper interconnects at high current density (Black's equation: MTF ∝ J⁻ⁿ exp(Eₐ/kT) where J&gt;1×10⁶ A/cm²)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "NAND flash cell charge leakage exceeding 10⁻¹⁵ A/cell"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement wear-leveling algorithms with 3% spare block allocation and BCH error correction with 72-bit correction capability"
  - node_2:
      trigger: "Write amplification factor exceeding 5.0 due to fragmented metadata"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement log-structured merge-tree indexing with 4MB SSTable segments and Bloom filters with 0.1% false positive rate"
bom_nodes:
  index-table:
    type: "component"
    urn: "URN:CNFX:ME:INDEX_TABLE"
    interface_type: "physical-logic-coupled"
  query-engine:
    type: "part"
    urn: "URN:CNFX:ME:QUERY_ENGINE"
    interface_type: "physical-logic-coupled"
  cache-layer:
    type: "component"
    urn: "URN:CNFX:ME:CACHE_LAYER"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/file-index-database.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "e3308745b9dec5a27e0adc0dd18f402da510b7d433b440c5071b4dcff3944c71"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: File Index Database

## 1. Technical Definition
A structured database component within a File Manager system that stores and organizes metadata about files for efficient retrieval and management.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-1000 IOPS at 1.5-3.3V DC**. Failure boundary: **Sustained operation above 85°C ambient temperature or below 0.8V supply voltage**, Mechanism: **Electromigration in copper interconnects at high current density (Black's equation: MTF ∝ J⁻ⁿ exp(Eₐ/kT) where J&gt;1×10⁶ A/cm²)**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| NAND flash cell charge leakage exceeding 10⁻¹⁵ A/cell | 8 | Bit error rate exceeding 10⁻³ uncorrectable by ECC | Implement wear-leveling algorithms with 3% spare block allocation and BCH error correction with 72-bit correction capability |
| Write amplification factor exceeding 5.0 due to fragmented metadata | 8 | Database response latency exceeding 50ms for 95th percentile queries | Implement log-structured merge-tree indexing with 4MB SSTable segments and Bloom filters with 0.1% false positive rate |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | entries | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Query Engine](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/query-engine.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Database Server Hardware**, **Network Storage Array**, **Uninterruptible Power Supply**  
**Downstream Applications**: File Management Systems, Data Analytics Platforms, Content Management Systems  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What is the primary function of a File Index Database in computer manufacturing systems?
**A**: The File Index Database organizes and stores metadata about files—such as names, sizes, creation dates, and locations—enabling fast retrieval, efficient management, and streamlined workflows in computer and electronic manufacturing environments.

### Q: How does the BOM (Index Table, Query Engine, Cache Layer) enhance file management performance?
**A**: The Index Table structures metadata for quick lookups, the Query Engine processes search requests efficiently, and the Cache Layer stores frequently accessed data to reduce latency, collectively speeding up file operations and system responsiveness.

### Q: Why is a File Index Database critical for digital data storage in optical product manufacturing?
**A**: In optical product manufacturing, where large volumes of digital files (e.g., design schematics, quality control images) are common, this database ensures organized metadata storage, preventing data loss, improving retrieval accuracy, and supporting compliance with industry standards.

## 6. Manufacturing Compliance
- ISO 9001:2015 QUALITY MANAGEMENT SYSTEMS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: File Index Database](https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/file-index-database)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: FILE_INDEX_DATABASE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: b7ea9cf0
