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ChatGPT: RAD Front-End Phase + Waterfall Back-End Phase (HYBRID MODEL)

Hybrid Software Development Model

⭐ Hybrid Model: RAD Front-End Phase + Waterfall Back-End Phase

Ini adalah model pengembangan perangkat lunak yang menggabungkan kecepatan iteratif RAD dengan ketertiban dan struktur Waterfall.

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🔵 1. RAD Front-End Phase (Iterative & Rapid)

Fase ini berfungsi untuk menghilangkan ketidakjelasan requirement, terutama UI/UX dan fungsionalitas utama.

Tujuan

Menyempurnakan kebutuhan secara cepat

Menghasilkan prototype nyata

Mengumpulkan feedback pengguna

Mengunci requirement sebelum masuk Waterfall

Tahapan RAD Front-End

1. Rapid Requirement Gathering

Diskusi cepat, tidak harus formal, fokus memahami kebutuhan.

2. Rapid Prototyping (UI/UX + core logic draft)

Membuat mockup, wireframe, atau prototype fungsional.

3. User Evaluation & Feedback Loop

Pengguna mencoba dan memberi masukan.

4. Refinement / Iterasi Ulang

Prototype diperbaiki beberapa siklus.

5. Requirement Finalization (Sign-off)

Setelah semua jelas → kebutuhan dikunci sebagai dasar Waterfall.

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🔶 2. Waterfall Back-End Phase (Structured & Sequential)

Setelah requirement stabil, proses pindah ke model Waterfall yang lebih formal.

Tujuan

Membangun sistem dengan struktur, dokumentasi, dan kontrol kualitas yang kuat.

Mengurangi perubahan besar agar pengembangan lebih efisien.

Tahapan Waterfall Back-End

1. System Design

High-level + detailed design (arsitektur, database, modul).

2. Implementation / Coding

Menerjemahkan desain menjadi kode final.

3. Integration & System Testing

Pengujian berdasarkan requirement yang sudah disetujui.

4. Deployment

Merilis sistem ke lingkungan produksi.

5. Maintenance

Perbaikan bug dan update minor.

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🧩 Diagram Konsep (Sederhana & Jelas)

RAD FRONT-END PHASE (Iterative)

+----------------------------------------------+

| Gather → Prototype → Feedback → Refine → OK |

+----------------------------------------------+

↓ (Sign-off Requirement)

WATERFALL BACK-END PHASE (Linear)

+-------------------------------------------------------------+

| Design → Implementation → Testing → Deployment → Maintenance |

+-------------------------------------------------------------+

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🆚 Perbedaan Inti

Aspek RAD Front-End Waterfall Back-End

Gaya kerja Iteratif cepat Linear terstruktur

Tujuan Menjelaskan requirement Membangun sistem final

Output Prototype + requirement final Produk jadi

Fleksibilitas perubahan Tinggi Rendah (dikontrol)

Dokumentasi Minimum → berkembang Lengkap & formal

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🔑 Manfaat Hybrid Ini

✔ User melihat bentuk sistem sejak awal

✔ Requirement lebih akurat sebelum coding besar-besaran

✔ Mengurangi risiko revisi di tengah pengembangan

✔ Tetap memenuhi standar dokumentasi dan audit (Waterfall)

✔ Menjaga kecepatan di fase awal (RAD)

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