MyBatch.cls

global class MyBatch implements Database.Batchable<sObject> {
    global Database.QueryLocator start(Database.BatchableContext context) {
        // Return query locator for data retrieval
    }
    
    global void execute(Database.BatchableContext context, List<sObject> scope) {
        // Process batch of records
    }
    
    global void finish(Database.BatchableContext context) {
        // Perform any post-processing tasks
    }
}

// Start the batch job
Database.executeBatch(new MyBatch());