Postgresql programming työt
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Your task is to design automated solvers for the shift and Vigen`ere ciphers. You must use C as the underlying programming language, in order to get prepared for the following assignments. Each solver should be completely automated, i.e., upon reading a text file containing the target ciphertext (given as command-line argument), it should print the encryption key and the decrypted plaintext without any user interaction. Test your code on the following ciphertexts, and answer these questions: (a) What is the key of the cipher? (b) What is the decrypted plaintext? Ciphertext 1 (shift cipher) ODKBFAXASKBDQEQZFEMPURRUOGXFKZAFRAGZPUZZADYMXMOMPQYUOPUEOUBXUZQEFTQZQQPRADFTQBDABQDUZFQDM OFUAZARODKBFASDMBTKMZPODKBFMZMXKEUEFTUEMDUEQEAGFARFTQRMOFFTMFUZFTQMNEQZOQARDQMXOAYYGZUOMF UAZEDQCGUDQYQZ...
Need java project No plagarism Deadline-23 may 2015
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...between users. Users will be able to register, see their balance, send/receive funds, and request withdrawals. There will be an admin side to review users, approve/reject transactions, and manage settings. Current status Basic bot is already started using Node.js, Telegraf and PostgreSQL. Some database tables and commands are implemented, but the project is not production-ready yet. Code needs review, cleanup, and completion of missing features. Main tasks Review the existing Node.js / Telegraf code and PostgreSQL schema. Fix bugs, optimize structure and make the code easy to maintain. Complete core flows: user registration and referral (if needed), deposit / balance update logic, send / receive / internal transfer flow, withdrawal request and admin approval,...
...product. The core idea is simple: users open the app and immediately see fresh, well-structured content that I publish through an admin dashboard. Clean navigation, quick load times, and an intuitive layout are critical. Here is what I have in mind: • Cross-platform build using Flutter or React Native so we keep a single codebase. • A lightweight backend (Firebase, Supabase, or a Node + PostgreSQL stack) that lets me log in, create articles, tag them, and push updates instantly. • Push notifications the moment new content goes live. • Basic user analytics so I can track reads, session length, and popular topics. • Solid offline caching so articles remain viewable without a signal. • Store-ready assets: app icons, splash screens, and scre...
...view for owners to monitor multiple branches. ● Exporting: One-click exports for accounting (CSV, Excel, PDF). 3. Technical Requirements ● ● ● ● Architecture: Offline-first using a local database (e.g., SQLite, Realm, or PouchDB). Front-End: Modern, responsive framework (e.g., React/Electron, Flutter, or .NET MAUI). Back-End (Cloud): Secure API (Node.js, Python, or Go) with a robust database (PostgreSQL/MongoDB). Hardware Compatibility: Standard Windows/Android drivers for retail peripherals. 4. Deliverables ● ● ● ● Fully Functional Application: Compiled installer for the target OS (Windows/ Android/macOS). Admin Web Portal: For remote management and analytics. Source Code: Well-documented code hosted on a private repository (GitHub/ GitLab). User Manual: Brief documentation for ...
...this guide, we’ll walk you through creating a fully functional DIY RC car using affordable, easy-to-find components like the Arduino Uno, joystick module, NRF24L01 wireless transceiver, and L298N motor driver. Whether you’re a hobbyist, a student, or just someone who loves tinkering with electronics, this project is a fun way to learn about wireless communication, motor control, and Arduino programming. By the end, you’ll not only have a working RC car but also a deeper understanding of how these components work together. Let’s roll up our sleeves, gather our parts, and bring your custom RC car to life! If you’d like, I can also create a clear parts list, wiring diagram, and Arduino code so your readers can follow along without confusion. Would y...
...Methods: Primary: GSM (cellular network) for cost-effective, low-latency sending. Failover: Satellite (e.g., Iridium or Globalstar network) if GSM unavailable. Power Source: Battery-powered with optional mini solar panel for recharging. Standby Battery Life: Minimum 1 year without charging (low-power mode). User Interface: Single button for activation; 2 LEDs for status feedback. Key Features Programming: Device can be programmed with fixed location coordinates (e.g., via USB, Bluetooth app, or initial setup). Activation Sequence: Press button once (short press): Activates 2nd LED (glows red) as confirmation; auto-off after 2 minutes if no further action. To send distress signal: Short press followed by long press (5 seconds). Upon successful transmission: 2nd LED turns green f...
We recently migrated a self-hosted Chatwoot instance from one server to another using Docker Compose. The migration included: PostgreSQL database (dump & restore) File storage migration from MinIO (old server) to DigitalOcean Spaces (S3-compatible) The problem: After migration, all new messages and file uploads work perfectly. However, files from conversations before the migration are broken — images, PDFs, and documents sent/received prior to migration no longer open. The old Chatwoot stored files in a MinIO bucket named chatwoot. The new setup uses DigitalOcean Spaces with a bucket named chatwoot-plantaocontabil. The files have been copied over, but the internal references (ActiveStorage blob keys/paths) no longer match the new storage structure. Example of a working U...
SCOPE AND ARCHITECTURE ADHERENCE The published technical requirements and stack (Python, PostgreSQL as source of truth, Redis for locking, Binance integration, Docker deployment) are the priority baseline for this project. If you propose architectural changes (e.g., different database, alternative execution model, third-party services, or different infrastructure), you must provide clear technical justification explaining: • Why the change improves robustness or reliability • How it preserves deterministic state and idempotency • What trade-offs are introduced • Why it is superior to the baseline stack "Unjustified stack substitutions or generic alternatives will not be considered" OPTION A – Hybrid (Binance + 3Commas) Senior Python Enginee...
...reconcile it continuously. • Track every offer, update the user’s balance in real time and flag failed or stale trades for manual review in an admin panel. Admin / Back-office A lightweight dashboard is needed for live game monitoring, user bans, bot status and manual item adjustments. Tech & Delivery I’m comfortable with common stacks such as Node.js, TypeScript, React, MongoDB or PostgreSQL, but I’m open to alternatives if they keep latency low and the interface snappy. Please outline your chosen stack, timeline and any hosting requirements when you reply. Acceptance criteria 1. Site replicates Bloxybet’s UX/UI closely (no original copywriting required). 2. Unlimited simultaneous coin-flip rooms run without lag. 3. Jackpot a...
...growth I’m restructuring the entire infrastructure and codebase for true horizontal scale, bullet-proof uptime, and lightning performance. Here is the current landscape you’ll step into: • Native iOS & Android codebases that need profiling, refactoring where necessary, and tighter CI/CD. • A Laravel monolith that must be modularised, cached with Redis, and tuned for very high concurrency. • PostgreSQL instances approaching their limits; we’re ready for partitioning, read replicas, and autoscaling. • Alibaba Cloud services (ECS, RDS, OSS, SLB) underpin everything, though I’m open to architectural suggestions, even hybrid or multi-cloud, if they offer measurable benefit. • Real-time websockets for live video, chat, not...
...already in place, but the UI needs a visual and usability upgrade before we move forward. Beginning tomorrow, I’d like you to step in, take ownership of the codebase, and carry the project all the way to production. On the backend I’m leaning toward Node.js, yet I’m flexible on the stack if you can justify clear benefits. Our database is still open for discussion—feel free to propose SQL (MySQL, PostgreSQL) or NoSQL (MongoDB, etc.) solutions that best fit a live-service game. Whichever route we pick, clean schema design, migration strategy, and security best practices are essential. Core scope • Fix and polish the existing frontend, focusing specifically on user-interface design so it looks and feels like a modern game portal. • Architect and...
...optimized for macOS (vfs_fruit, extended attributes) • macOS Time Machine backup share • Avahi/Bonjour — server appears in Finder automatically • NFS for Linux clients • SFTP with key auth • SMART monitoring, ZFS scrub schedule, nightly backups • Organized shares: /data/documents, /data/media, /data/backups, /data/projects, /data/ai-models 3. NEXTCLOUD (Dockerized) • Docker Compose with MariaDB/PostgreSQL + Redis • SSL via Let's Encrypt, file versioning, sharing links • Sync client tested on my MacBook • API access enabled for future AI integration 4. DOCKER INFRASTRUCTURE • Docker Engine + Compose + Portainer • Clean project structure, isolated networks per service • Watchtower, health checks, log rota...
CUSTOM ELEMENTOR / CSS PROGRAMMING These tasks are needed: TASK ONE: HOMEPAGE The client want all sections removed from their present live website except their logo, video phone number and some text, add WhatsApp, email and text icons at top above the navigation. Next using this site as a reference, the client wants their website to have the same intro design: to be used as the reference. Must look like the reference on all platforms. TASK TWO In addition, the client wants this footer to be created for all pages: this is the reference site to see the design: large logo same layout (no mobile app) link newsletter to clients constant contact TASK THREE They want the same navigation design as this is this site:
...(Spring Boot/Node.js/Socket.io) Configure server dependencies (Java, PostgreSQL/Redis, Maven) • Infrastructure: Are you planning to deploy on a our server • Version: need the latest official Signal Server (Java-based) • Customization : rebrand the app or simply run a private instance Configuration & Customization: Set up config .yml for production Optional branding or private instance configuration ________________________________________ Core System Requirements The official Signal Server is Java application requiring several dependencies: • Java Runtime: Spring Boot (The latest versions typically require Java 24) or Erlang/Elixir (Temurin distribution), though older guides (v1.88) used Java 11. • Databases: PostgreSQL & Founda...
1. Project Overview We are seeking a developer to enhance an existing production web application built with the following technology stack: • Frontend: Vue.js • Backend: Laravel (API) • Database: PostgreSQL • Storage: AWS S3 • Deployment: GitHub Actions + AWS EC2 The system is already live and operational. This engagement focuses on foundational improvements and feature extensions — not a full redesign. 2. Scope of Work (Initial Phase) This phase focuses on improving the document upload workflow and implementing basic cloud import functionality. 2.1 Document Upload Improvements Requirements • Implement drag-and-drop upload support. • Support the following file types: • PDF • DOC / DOCX • CSV • XLSX ...
1. Project Overview We are seeking a developer to enhance an existing production web application built with the following technology stack: • Frontend: Vue.js • Backend: Laravel (API) • Database: PostgreSQL • Storage: AWS S3 • Deployment: GitHub Actions + AWS EC2 The system is already live and operational. This engagement focuses on foundational improvements and feature extensions — not a full redesign. 2. Scope of Work (Initial Phase) This phase focuses on improving the document upload workflow and implementing basic cloud import functionality. 2.1 Document Upload Improvements Requirements • Implement drag-and-drop upload support. • Support the following file types: • PDF • DOC / DOCX • CSV • XLSX ...
...school-specific data Answer contextual questions Automate admin tasks Generate reports Provide predictive analytics Work role-wise (Admin / Teacher / Parent / Student) 4. Scope of Work for AI Developer Phase 1 – AI Architecture Design Developer must: Design AI system architecture Create data ingestion pipeline Build RAG (Retrieval Augmented Generation) system Connect to school database (Supabase / PostgreSQL) Ensure multi-school isolation (SaaS model) Implement role-based AI responses Phase 2 – Core AI Features 1️⃣ Admin AI “Show attendance report of Class 10A this month” “Which teachers have pending syllabus?” “Generate monthly performance report” Predict drop in performance Identify fee defaulters 2️⃣ Teacher AI Auto lesson plan g...
...implementarse sistema que capture: • GCLID • Keyword • Campaña • Grupo de anuncios Opciones válidas: • Uso de número de reenvío de Google • Captura GCLID en formulario y almacenamiento en base de datos • Asociación del GCLID con número llamante Se debe almacenar en base de datos: • Fecha llamada • Teléfono • GCLID • Keyword • Campaña • Duración Base de datos aceptada: • MySQL • PostgreSQL • SQLite (si es ligera) ⸻ FASE 2 – Análisis automático de conversación El sistema debe: 1. Detectar nueva llamada desde API de Zadarma. 2. Obtener grabación o transcripción. 3. Enviar trans...
...access Location (GPS) + maps integration Clean UI/UX 4) Deliverables Android app (APK + source code) Admin + Lab Panel (web) OR Lab partner app Backend + DB + APIs Deployment support (server setup) Basic documentation + handover 1–2 months bug support (mention in proposal) 5) Preferred Stack (Developer suggest) Flutter / React Native (mobile) Node.js / Django / Laravel (backend) MySQL/PostgreSQL Firebase/FCM push notifications AWS/S3/Cloud storage for reports 6) Please include in your proposal Similar apps experience (Health / booking apps) Timeline + cost breakup (Phase wise) Team size & communication plan Post-launch maintenance cost (optional) Budget: (Developer propose) Start: Immediately Country: India...
Job Title: Senior Cloud Database Engineer – PostgreSQL Migration Architect Location: Remote Work Timing: UK Business Hours (GMT/BST) Engagement Type: Freelance (Long-Term Possible) Platform: Freelancer.com Project Overview We are seeking a highly skilled and experienced Senior Cloud Database Engineer with deep specialization in PostgreSQL migrations and distributed database infrastructure. This role is for a demanding enterprise client, so we require a proven track record of successful large-scale cloud database migrations with verifiable experience. You must be comfortable working during UK business hours and collaborating with cross-functional cloud and infrastructure teams. Role Summary Senior Cloud Database Engineer – PostgreSQL Migration Architec...
...firmware or parameter discrepancies, and then implement improvements that boost stability and cycle-time performance. After each change I expect clear documentation describing what was adjusted, why, and how to roll back if ever required. Because the install is proprietary FA Feurer equipment rather than a mainstream Siemens or Allen-Bradley rack, prior, hands-on experience with FA Feurer tools, programming environment and diagnostic utilities is essential. Comfort working with fieldbus layouts, network topology checks, and controller backup/restore procedures will make the difference. Deliverables • Verified backup of the current controller programs and network configs • Updated controller firmware or logic with change log • Optimised communication-network...
...you suggest—surfaced within one tap from the dashboard. Speed and reliability matter more than bells and whistles: every interaction should load in under a second, and every piece of patient data must be encrypted at rest and in transit. Tech-stack choices are open, though I’m leaning toward a React front-end, Node/Express or Django back-end, JWT-based auth, and a cloud database (MongoDB, PostgreSQL, or similar). If you prefer another combination that still gives me a clean, responsive UI, I’m flexible. Deliverables • Fully responsive UI with appointment scheduling as the focal point • Direct-contact hospital directory integrated into the same workflow • Secure user management (registration, login, role-based access) • REST or G...
...(Express) • Python (Flask) • PostgreSQL (Cloud SQL) • BigQuery • GCP (Cloud Run, Pub/Sub, GCS, Cloud Build, Cloud KMS) • Terraform • Event-driven architecture • HIPAA-compliant infrastructure • AI-assisted development (Claude Code) Responsibilities • Own and extend our ingestion backend (Node.js) • Maintain and evolve our mapping/transformation service (Python) • Design and implement secure healthcare data pipelines • Ensure PHI separation and HIPAA compliance • Debug production pipeline failures (Pub/Sub, DLQs, idempotency) • Improve observability (structured logging, monitoring, alerts) • Collaborate in an AI-first development workflow Required Experience • 5+ years professional backend developm...
...workflow, and our current e-commerce flow. The assignment covers more than a straight port: once the core experience is re-implemented, I also want richer analytics and reporting, stronger security hardening, and seamless hooks into selected third-party services so the new platform launches with clear business insight, tighter protection, and future-ready integrations. You will work against a PostgreSQL back end; no other database is required. All existing WordPress data—users, posts, media, products, orders, and settings—must transfer intact, with zero visible downtime to customers. I will supply an export of the current site along with a prioritised feature map to guide development. Deliverables • Complete Visual Studio / .NET solution with clean, commented s...
...elettroniche e PDF. • Dashboard riepilogativa dello stato fatture e fatturato • Esportazione dati in Excel/CSV e stampa report personalizzati. • Gestione utenti con ruoli e permessi. Requisiti tecnici • Front-end web responsive; preferenza per React o Vue, ma sono aperto ad alternative solide. • Back-end scalabile (Node.js, Django o simili) con API REST. • Database relazionale (PostgreSQL o MySQL). • Codice documentato in italiano o inglese e versionato su Git. Extra graditi (non obbligatori, ma indicare se già in competenza) – Integrazione API invio telematico fattura elettronica e sistema TS. – Possibilità futura di estendere il progetto a gestione del bilancio e rendicontazione fiscale. Conse...
...filing deadlines. Reminder System: Email/SMS notifications for upcoming deadlines (e.g., 30-day stamping deadlines for Letters of Offer). Conflict Check: A search tool to ensure no conflict of interest before opening new files. Technical Preferences Frontend: React, Vue.js, or Angular for a responsive, modern UI. Backend: Node.js (Express), Python (Django/FastAPI), or PHP (Laravel). Database: PostgreSQL or MongoDB (must be secure and scalable). Document Processing: Integration with libraries like Docxtemplater, , or specialized APIs for document manipulation. Security: High-level encryption (AES-256), SOC 2 compliance standards, and multi-factor authentication (MFA). Freelancer Requirements Proven portfolio in SaaS or Enterprise Resource Planning (ERP) software. Experien...
...done. • Provide a working client package—or clear instructions for obtaining and patching one—that logs straight into the server. • Leave me with a brief text file covering commands to start/stop the server, locations of configs, and any future update steps. I intend on implementing my own custom map, npcs etc once I have the server set up. If you have experience with Canary, TFS, MySQL/PostgreSQL setups, and client linking quirks, this should be straightforward. I would prefer to work alongside you using screenshare. Looking forward to finally seeing the server online and playable! If you are not used to this work - You are welcome to purchase a ubuntu 22.04 vps to attempt to get this set up for yourself, before teaching me how to do so. I will happ...
... or gRPC Microservices architecture Machine Learning and AI TensorFlow, PyTorch, Scikit-Learn, or similar frameworks Experience working with LLMs and modern AI frameworks Prompt engineering, RAG, or vector databases is a plus Cloud and DevOps AWS, Azure, or Google Cloud Platform Docker and Kubernetes CI/CD pipelines and deployment practices Data and Systems SQL or NoSQL databases (PostgreSQL, MySQL, MongoDB, Redis) Data processing and scalable system design experience Security and Best Practices OAuth, JWT, RBAC authentication systems Secure API development and production standards Optional (Nice to Have) Blockchain or emerging technology experience Expectations Strong real-world development experience Good English communication skills Ability to confidently ...
...& Caching Work with PostgreSQL for schema design and queries Use Drizzle ORM (or similar ORM) for database operations Implement caching strategies using Redis Optimize queries and data access patterns Collaboration & Delivery Work closely with distributed Agile teams Participate in sprint planning / review sessions (as needed) Deliver features within agreed timelines Provide clean, maintainable, well-documented code Support bug fixes and performance improvements Required Skills & Experience Proven experience as a Full Stack Developer (Freelance / Contract / Full-time) Strong proficiency in Angular (v18+), TypeScript, HTML, CSS Solid experience with Node.js Experience with / Strong understanding of REST APIs & Microservices Experience with PostgreSQL Fam...
...Management - Vendor Registration - Performance Tracking - Payment Management 8. Admin Panel - User Management - Role & Permission Management - Master Data Management 9. Reports & Analytics - Production Reports - Inventory Reports - Quality Reports - Sales Reports Technical Requirements: - Modern scalable stack (React, Flutter, Node.js, Laravel, .NET) - PostgreSQL/MySQL database - Cloud deployment (AWS/Azure) - Secure API-based architecture - Role-Based Access Control - Workflow Automation - Approval Systems - Document Management - Dashboard & Reports - WhatsApp/Email/text message Integration - Future SAP Integration Ready Features: - Web Admin Panel - Android & iOS Mobile App - Real-time Notifications - Automated Workf...
Saya ingin memiliki deskripsi keterampilan—lengkap, jelas, dan berbahasa Inggris—yang bisa saya pakai di CV, LinkedIn, dan proposal proyek. Fokus utama deskripsi harus menonjolkan kemampuan Management Skills saya, namun tetap memuat aspek Programming & Software Development, khususnya keahlian Java, agar profil terlihat seimbang dan multidisipliner. Ruang lingkup pekerjaan: • Tulis ringkasan naratif berbahasa Inggris ±300–400 kata yang terdengar profesional tetapi tetap natural. • Sertakan daftar bullet singkat (5–7 poin) yang menegaskan kompetensi inti di manajemen proyek, kepemimpinan tim, strategic planning, hingga pengalaman coding Java. • Jaga konsistensi tone: percaya diri, terukur, dan relevan untuk industri teknologi maup...
...experience, education, skills and anything else you can legally obtain). I will confirm the final field list before you begin. Key objectives • Build or configure a scraper / API wrapper that logs in, navigates to each target profile and captures the agreed-upon fields • Write clean code with clear comments so I can maintain it later • Save each record directly into a relational table (MySQL or PostgreSQL—let me know which you prefer) using prepared statements to prevent SQL injection • Provide a simple configuration file where I can switch credentials, database connection strings and add new profile URLs without touching the core logic Acceptance criteria • I point the tool at 10 test profiles; all mapped fields appear in the database exa...
...ratings, booking calendars, and other extras can wait, so please build the architecture with clean separation of concerns to make those future add-ons painless. You are free to choose a modern stack—React, Vue, or vanilla JS for the front; Node, Django, Laravel, or a similar framework for the back—so long as the code is well-documented, componentised, and backed by a reliable database such as PostgreSQL or MySQL. The finished site must run smoothly on desktop and mobile, load fast on a 4 G connection, and deploy to my VPS or a cloud host that we agree on. Deliverables for this milestone • Responsive UI with intuitive navigation and modern aesthetic • Secure sign-up, login, and profile management • Tool listing creation/edit screens with image up...
The developer should build a cross-platform AI-powered IT Help Desk agent and management system that supports Windows, Linux, and macOS. The system must include a backend API (preferably in Python FastAPI or Node.js) to handle ticket management, device registration, and command distribution, along with a secure database (PostgreSQL) and an optional vector database for AI knowledge retrieval. The agent itself should be written in a compiled language like Go for cross-platform deployment, capable of registering devices, reporting system info and heartbeat, detecting missing patches, restarting services, and executing safe commands remotely. The AI component should analyze incoming IT tickets, automatically suggest fixes, and optionally execute auto-remediation commands when safe. All ...
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I need a programming expert. I have an app that needs urgent improvement.
...Design quality is paramount: clean, polished, modern UX/UI execution * Bug-free delivery is paramount: high attention to detail and strong QA habits * Mastery of AI workflows is paramount and will be evaluated in the hiring process Requirements * Strong hands-on experience with and Laravel * Proven experience building and consuming REST APIs * Strong SQL/database skills (MySQL or PostgreSQL) * Comfortable with Git-based workflows and high-quality PR reviews * Clear communication and ability to work independently Nice to Have * Experience with auth flows (Laravel Sanctum, NextAuth, etc.) * CI/CD and deployment experience (VPS, Docker, containerized infra) * Performance and security hardening experience * Experience integrating LLM tools and AI-assisted development workflows Hi...
