How to automate basic ddl scripts execution and management
Development Life-cycle requires at least:


A Code Repository (eg Git) to store your CREATE TABLE scripts
Some tool (eg Liquibase) to auto-generate the ALTER TABLE scripts
Unit Testing tools (SQL Developer has one built in)
DevOps framework (eg Azure DevOps) to automate


the build up of QA/TEST environment
deploy scripts to QA/TEST
run Unit Test on Test
deploy scripts to prod



A future version of Oracle SQL Developer might include Liquibase.