devops

Database schema migration workflow with CI testing, DBA review and approval, maintenance window scheduling, backup snapshots, migration execution, data integrity verification, and automatic rollback.

Full FlowZap Code

Developer { # Developer
n1: circle label:"Start"
n2: rectangle label:"Create migration script"
n3: rectangle label:"Test locally"
n4: rectangle label:"Review migration results"
n5: circle label:"End"
n1.handle(right) -> n2.handle(left)
n2.handle(right) -> n3.handle(left)
n3.handle(bottom) -> CI.n6.handle(top) [label="Push to repo"]
n4.handle(right) -> n5.handle(left)
}
CI { # CI Pipeline
n6: rectangle label:"Run migration in test DB"
n7: diamond label:"Migration successful?"
n8: rectangle label:"Generate rollback script"
n9: rectangle label:"Fail build with errors"
n6.handle(right) -> n7.handle(left)
n7.handle(right) -> n8.handle(left) [label="Yes"]
n7.handle(bottom) -> n9.handle(top) [label="No"]
n8.handle(bottom) -> DBA.n10.handle(top) [label="Approve"]
n9.handle(top) -> Developer.n2.handle(bottom) [label="Fix script"]
}
DBA { # Database Admin
n10: rectangle label:"Review migration plan"
n11: diamond label:"Approve for production?"
n12: rectangle label:"Schedule maintenance window"
n13: rectangle label:"Request changes"
n10.handle(right) -> n11.handle(left)
n11.handle(right) -> n12.handle(left) [label="Yes"]
n11.handle(bottom) -> n13.handle(top) [label="No"]
n12.handle(bottom) -> Production.n14.handle(top) [label="Execute"]
n13.handle(top) -> Developer.n2.handle(bottom) [label="Revise"]
}
Production { # Production Database
n14: rectangle label:"Create backup snapshot"
n15: rectangle label:"Enable maintenance mode"
n16: rectangle label:"Execute migration script"
n17: diamond label:"Migration completed?"
n18: rectangle label:"Verify data integrity"
n19: rectangle label:"Execute rollback script"
n20: rectangle label:"Disable maintenance mode"
n14.handle(right) -> n15.handle(left)
n15.handle(right) -> n16.handle(left)
n16.handle(right) -> n17.handle(left)
n17.handle(right) -> n18.handle(left) [label="Yes"]
n17.handle(bottom) -> n19.handle(top) [label="No"]
n18.handle(right) -> n20.handle(left)
n19.handle(right) -> n20.handle(top)
n20.handle(top) -> Developer.n4.handle(bottom) [label="Complete"]
}

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