> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blockdb.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> BlockDB data catalog — complete schema reference for EVM blockchain datasets: blocks, transactions, prices, DeFi, and transfers.

## Overview

BlockDB ships a Postgres schema for every dataset that also powers the Historic REST API. The scripts in `/BlockDb.Postgres.Tables.Public` are the canonical definitions; each dataset here mirrors the SQL `CREATE TABLE` statements, constraints, and indexes from that source.

All tables follow a `<schema>.<dataset_id>_<name>_v<major>` naming convention to support multiple chain families at scale:

* **EVM datasets** live in `blockdb_evm` (for example, `blockdb_evm.b0101_blocks_v1`)
* **SVM datasets** live in `blockdb_svm` (for example, `blockdb_svm.b0101_blocks_v1`)

Dataset IDs match the REST API identifiers (`0101` for blocks, `0201` for ERC-20 tokens, etc.) so you can map SQL exports to API payloads or lineage metadata.

## How to use this catalog

1. Choose your chain family (EVM or SVM).
2. Open the chain overview to browse datasets and review per-table documentation.
3. Use dataset IDs to map between SQL tables, API payloads, and lineage records.

<CardGroup cols={2}>
  <Card title="EVM dataset index" icon="ethereum" href="/data-catalog/evm/dataset-index">
    Browse all EVM tables, grouped by domain (ledger, tokens, reserves, pricing, analytics).
  </Card>

  <Card title="SVM overview" icon="cube" href="/data-catalog/svm/overview">
    Learn about the Solana (SVM) catalog roadmap and upcoming dataset structure.
  </Card>
</CardGroup>