Mastering Blockchain Programming with Solidity

Writing contract migration scripts

The migration scripts should be written in the JavaScript file for the truffle project. It must be present under the migrations folder. As the project progresses in terms of development, your contract also needs changes, and will require contract or setup changes present on the blockchain. This is done by adding new migrations scripts. Using the special contract, Migrations.sol, the history of the executed migration scripts are recorded on-chain.