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

# Overview

The decoded schema includes decoded event logs and trace call data on Ethereum.

Our Ethereum Decoded schema contains the following tables:

| Schema | Description | Tables |
| - | - | - |
| Decoded | Decoded event logs and traces data. | [contracts](/historical-data/supported-blockchains/evm/ethereum/decoded/contracts), [logs](/historical-data/supported-blockchains/evm/ethereum/decoded/logs), [traces](/historical-data/supported-blockchains/evm/ethereum/decoded/traces) |

In addition to the columns present in the raw tables, these tables include additional columns, with decoded data represented in JSON format.

### Methodology

1. To decode Ethereum Call data and Event log data, the structure, type, and order of these data types must be first understood. This is defined in the [ABI (Application Binary Interface)](https://docs.soliditylang.org/en/develop/abi-spec.html) of the contract.

**Additional Resources:**