Database Design is an important process that involves designing, creating and maintaining databases for business, scientific, and other applications. This is done to ensure data accuracy, data integrity, and appropriate delivery of information for an organization's internal and external use. A Database Designer is a specialist who is responsible for implementing the database design by creating the necessary programming code to support it.

At its core, Database Design encompasses relation modeling and optimizing the performance of databases through the use of indexing and proper construction of the queries. It also involves improving the usability of an application by providing the correct security settings and authentication measures that protect data from tampering. Database Designers also develop programs to monitor system performance and efficiency while ensuring data integrity throughout all operations.

Here’s some projects that our expert Database Designers made real:

  • Building ER models to represent specific projects
  • Creating SQL and PL/SQL systems for student appointment management
  • Implementing techniques to support database system development
  • Developing relational databases that can include user authentication measures
  • Optimizing a database’s performance with indexing and query construction
  • Designing a Microsoft Access activity tracking system linked to external sources
  • Building tailored Buy/Sell Request forms and systems.

These are just some of the projects our expert Database Designers have completed on Freelancer.com! If you’re looking for someone to help you with your own project, don’t hesitate to post your task on our platform – our leading designers have extensive experience in handling all types of projects related to database management. With their help, you can be sure that your project will be handled with utmost care and efficiency!

From 38,029 reviews, clients rate our Database Designers 4.91 out of 5 stars.
Hire Database Designers

Database Design is an important process that involves designing, creating and maintaining databases for business, scientific, and other applications. This is done to ensure data accuracy, data integrity, and appropriate delivery of information for an organization's internal and external use. A Database Designer is a specialist who is responsible for implementing the database design by creating the necessary programming code to support it.

At its core, Database Design encompasses relation modeling and optimizing the performance of databases through the use of indexing and proper construction of the queries. It also involves improving the usability of an application by providing the correct security settings and authentication measures that protect data from tampering. Database Designers also develop programs to monitor system performance and efficiency while ensuring data integrity throughout all operations.

Here’s some projects that our expert Database Designers made real:

  • Building ER models to represent specific projects
  • Creating SQL and PL/SQL systems for student appointment management
  • Implementing techniques to support database system development
  • Developing relational databases that can include user authentication measures
  • Optimizing a database’s performance with indexing and query construction
  • Designing a Microsoft Access activity tracking system linked to external sources
  • Building tailored Buy/Sell Request forms and systems.

These are just some of the projects our expert Database Designers have completed on Freelancer.com! If you’re looking for someone to help you with your own project, don’t hesitate to post your task on our platform – our leading designers have extensive experience in handling all types of projects related to database management. With their help, you can be sure that your project will be handled with utmost care and efficiency!

From 38,029 reviews, clients rate our Database Designers 4.91 out of 5 stars.
Hire Database Designers

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    23 jobs found

    I need a complete slot-style casino game that players can enjoy in their browsers or in a dedicated mobile-ready build, plus a secure back-office where I can run every aspect of the operation. Gameplay • Smooth, modern slot mechanics with engaging graphics, sound, and a provably fair or RNG-certified engine. • All core player actions—spin, stake selection, auto-play, win animations—must be fluid and performant across devices. Admin & Analytics The back-office is just as important as the game itself. From one panel I have to: 1. Create, edit, suspend, or delete player accounts (user management). 2. View real-time and historical game statistics—RTP, turnover, active users, hit frequency, top wins, etc. 3. Credit and debit balances, approve withdr...

    $14 / hr Average bid
    $14 / hr Avg Bid
    19 bids

    I have a production oracle instance that has grown beyond 100 GB and it now needs to live on SQL ,Server postgres sql . The task covers everything from preparing the source, mapping the schema, transferring the data, and validating that every object—tables, views, functions, and constraints—behaves exactly the same once it lands in SQL Server. Here is what I expect to walk away with: • A fully migrated SQL Server database, ready for cut-over • A repeatable migration script or SSIS/ADF/DMS pipeline so I can re-run the process for future refreshes • A concise migration report highlighting any datatype conversions, performance tweaks, and objects that required special handling • Verification scripts or queries that prove row counts, checksums, and refe...

    $16 / hr Average bid
    $16 / hr Avg Bid
    18 bids

    Our Oracle E-Business Suite instance and its core databases are straining under heavy loads, and I need an experienced hand to restore peak performance. The assignment centers on performance tuning, specifically: • Query optimisation – analysing execution plans, AWR/ASH reports and SQL traces to cut response times and CPU usage. • Index management – auditing existing structures, redesigning or rebuilding where needed, and advising on partitioning or compression if it brings measurable gain. I will grant full access to the non-production environments first, then schedule controlled moves into production once we agree on the changes. Clear before-and-after metrics are essential; please include a concise report that shows what you changed, why, and the improvemen...

    $13 / hr Average bid
    $13 / hr Avg Bid
    8 bids

    BUDGET IS FIX. READ BEFORE PLACE BID. ONLY EXPERIENCE DEVELOPER The goal of this project is to design and develop a custom Customer Relationship Management (CRM) system tailored specifically for a real estate agency. The CRM will streamline property management, client interactions, sales tracking, and internal workflows, improving efficiency and enabling data-driven decision-making. Scope of work Objectives: Centralize all client, property, and transaction data in one system Improve lead tracking and conversion rates Automate routine tasks and follow-ups Enhance communication between agents and clients Provide real-time reporting and performance insights. Key Features: 1. Lead & Contact Management Capture leads from website, portals, and manual entry Track buyer, seller, tenant, an...

    $1004 Average bid
    $1004 Avg Bid
    395 bids

    I need to take Dukandar a step further by giving my store managers and cashiers true real-time visibility into inventory. The single focus is improving inventory tracking, and within that, delivering live stock updates. Every update must show two things side by side: the exact current stock level for each SKU and the most recent sales history that caused the change. Supplier information can stay out of scope. Your solution has to work in an offline-first retail environment—our shops lose connectivity at times—so local writes must sync automatically once the network is back. Whether you prefer Node, Laravel, Python, Firebase, Flutter, React, or something similar, the code must be well documented and production-ready. Clean database design, efficient change listeners, and a push...

    $499 Average bid
    $499 Avg Bid
    59 bids

    I’m expanding a large-scale IBM i modernization program and need 15-20 seasoned engineers who can hit the ground running this week. Every member of the squad must be equally comfortable in RPGLE and DB2/400, COBOL/400 and CBLLE, plus SQLRPGLE and SQLCBLLE; this is non-negotiable because the codebase spans all those languages. Day to day you’ll design and refactor triggers and stored procedures, keep our repositories clean with Git, and write repeatable unit tests against DB2/400 using the standard IBM i testing frameworks. We work entirely in Rational Developer for i, so an intermediate command of RDi shortcuts, debuggers, and plugin management is essential. The environment runs on IST hours, fully remote, with an initial six-month horizon and clear funding to extend well bey...

    $1556 Average bid
    $1556 Avg Bid
    10 bids

    We are looking for an experienced Software / System Architect to design and review the architecture of a closed-loop financial platform. The platform includes user accounts, balances, transactions, deposits/withdrawals, trading, payments, wallet functionality, and administration. We already have a development team and an existing system. We need an architect who can review the current setup, identify gaps, design the overall system architecture and flows, and provide clear technical guidance and architecture documentation for our developers. Experience with FinTech, payment systems, trading platforms, digital assets, banking, or other transaction-heavy financial systems is highly preferred. Please share relevant architecture experience and examples of similar systems you have worked on...

    $201 Average bid
    $201 Avg Bid
    39 bids

    I need a full-featured learning management system for an education venture. The platform has to let me create and manage courses with ease, run student assessments, and track each learner’s progress through intuitive dashboards. You’re free to use the stack you know best—Moodle, Laravel + React, or another reliable framework—as long as the code is clean, documented, mobile-responsive, and WCAG accessible. I’ll supply all course content; you’ll architect the database, build the modules, and deploy the finished site to my hosting. Deliverables • Course management module (add, organise, set prerequisites) • Assessment engine that supports quizzes, assignments, and auto-grading • Real-time progress-tracking dashboards for students an...

    $408 Average bid
    $408 Avg Bid
    88 bids

    Duration : 6 Months Shift : US shift Job Summary: We are seeking a skilled Data Engineer with 5+ years of experience in designing, developing, and implementing data migration and archival solutions. The ideal candidate will have expertise in Azure cloud technologies, ETL/ELT development, data validation, and enterprise data migration projects involving ERP and HCM systems. This role will focus on building scalable data pipelines, ensuring data quality, and supporting large-scale migration and archival initiatives. Technologies: Azure Data Lake, Azure Data Bricks, Azure Data Factory, Azure DevOps, Gitlab, Github, & Snow Key Responsibilities: • Design and implement ETL processes to move data from various legacy systems to Azure data platforms. • Design and develo...

    $748 Average bid
    $748 Avg Bid
    43 bids

    Software Engineer Experience Required: 5-7 Years Location :- Ahmedabad (On site) Working days - 5.5 Weekday (Half day Saturday) Contract Role - Initially 3 to 6 Month. Based on performance it will extend. Role Summary: Designs, develops, tests, and enhances custom applications, APIs, workflows, and integration components while ensuring adherence to coding standards, quality requirements, and security guidelines. Skills Required: Full-stack application development API design and development Database design and management Unit testing and code quality practices Secure coding principles CI/CD collaboration Technical documentation Integration development

    $1057 Average bid
    $1057 Avg Bid
    56 bids
    Restore Sage50 MySQL Data
    3 days left
    Verified

    I have a Sage 50 (Canadian edition) company that stores its data in MySQL-style *.frm files. After repairing corruption outside of Sage, all tables now exist only as clean exports—both *.sql dumps and matching *.csv files. My challenge is getting that data back into the working Sage50 MySQL repository so the program will recognise the company and let me complete the fiscal year-end rollover. I would like this project completed as soon as possible. Here’s the current state: • Schema files: original Sage-generated *.frm files still sitting in the data folder. • Data files: full content available in *.sql and *.csv formats. • Problem: attempts to re-import keep failing because Sage50 expects its exact table structure, indexes, triggers and constraints. Error...

    $144 Average bid
    $144 Avg Bid
    175 bids

    CORE-103 Data & SQL Foundations. 10 topics. Almost every system these students build or support will store its data in a relational database, and almost every serious production incident involves one. From what a database is for through querying, joins and aggregation to schema design, transactions and indexing. Real time goes to reconciliation - checking that a query returned the RIGHT answer rather than a plausible one - because a wrong number delivered confidently is worse than no number at all. Note: this course shares ground with DB-101, the Databases track foundation, at a much shallower depth. You will be asked to coordinate with that trainer so the two reinforce rather than repeat each other. THE 10 TOPICS — FIXED 1. What a database is for (6 h) - persistence, con...

    $37 / hr Average bid
    $37 / hr Avg Bid
    105 bids

    MVP Build — Quote Request We're looking for a freelance developer or small team to quote an initial MVP build. This is a rough-scope request to get a ballpark quote — not a full technical spec. Additional phases/tiers will be scoped separately once we're underway. What we're building (high level) A web platform that connects to third-party business software a client already uses (accounting/ERP-type systems, CRM/marketing platforms, etc.), pulls their data into a secure cloud environment, and gives the client a simple portal to log in and view/query that data — including an AI-assisted question-answering feature over their own data. Core skills required Backend development (Node.js/Express or equivalent) — building and hardening API routes, workin...

    $627 Average bid
    $627 Avg Bid
    186 bids
    Recover InnoDB Data & Backup
    1 day left
    Verified

    My MySQL 5.5.18 instance is limping along after a corruption event—system tables open, but every InnoDB table throws errors. The server is only “partially functional,” so I have powered it down and kept all data files intact (ibdata, ib_logfile*, .frm, .ibd, relay/binlogs, ). Remote log-in isn’t possible; you will need to walk me through everything step-by-step while I work directly on the box. What I need is a complete, reliable FULL backup of every database, including the damaged InnoDB tables, so I can spin up a fresh 5.7+ server later. I am comfortable following detailed terminal commands; I just need an expert plan and real-time guidance to: • Mount the data directory in a safe environment (ideally using Percona XtraBackup, mysqlbackup, or a comparable t...

    $122 Average bid
    $122 Avg Bid
    24 bids

    I need an end-to-end iGaming solution aimed at the Chinese-speaking market. The job covers both the customer-facing front end and the operational back-office. I can provide URLs and credentials to our current sites so you can mirror the best features that already exist in the industry. Front-end scope • Build three responsive templates: Sports Betting, Casino Games, and Poker Room. • Each template must support live streaming, user profile pages, and full multi-language toggling (with Chinese as the default locale). • Templates should share a component library so future skins can be added quickly. Back-office scope • User management (KYC workflow, role/permission matrix, player segmentation tools). • Payment processing that accommodates common Asian gateways...

    $6186 Average bid
    $6186 Avg Bid
    73 bids

    I need a solid PostgreSQL-backed RESTful API to drive the Solar TwinPro web application. Your task is to design the database schema and expose clean, versioned endpoints that cover full CRUD functionality for each core resource in the system. The web front-end will consume JSON, so consistent status codes and clear error handling are important. Please structure the project so it can be deployed easily (Docker preferred, but I am open to other simple approaches) and include concise documentation; an OpenAPI/Swagger spec is ideal so the front-end team can plug in without guesswork. Deliverables • PostgreSQL schema (DDL) and seed data • REST endpoints covering create, read, update, delete for all defined entities • Environment and run instructions (e.g., Dockerfile or...

    $324 Average bid
    $324 Avg Bid
    80 bids

    I need a cloud-hosted CRM built from the ground up for a growing laundry franchise. The core priority is robust multi-store franchise management, so every branch can operate independently while still feeding real-time data to head office. Key workflow: • Each store logs in through its own portal to record orders, update statuses, and see today’s targets. • A live sales dashboard rolls those numbers up instantly so I can compare performance across branches from any browser or mobile device. Billing & invoicing must be friction-free. The system should generate fully customizable invoices that reflect our branding and service codes, then trigger automated payment reminders until a balance is cleared. From the central admin console I want the power to: • Add or ...

    $367 Average bid
    $367 Avg Bid
    56 bids

    I need a complete, production-ready accounting system built from the ground up for small-business use. The core of the application must revolve around an intuitive cashbook, with seamless links to the General Ledger, Accounts Receivable/Payable, and an automated Bank Reconciliation workflow. Beyond day-to-day entries, I expect a solid reporting engine that can quickly generate the standard financial statements small companies rely on—think balance sheet, income statement, cash flow, and any custom summaries management may request. While those reports weren’t pre-selected in the questionnaire, please architect the platform so adding or modifying report templates is straightforward. The flow I have in mind: • Transactions land in the cashbook → post to the GL in...

    $1267 Average bid
    $1267 Avg Bid
    231 bids

    Industrial AI Integration Platform – ERP & Manufacturing Systems Connectivity If your work rate is not 2-3$ per hour, please don’t apply!!!! Project Overview We are developing an advanced industrial software platform focused on improving operational efficiency within manufacturing environments. We are looking for an experienced developer/architect who can help us build the integration layer between our platform and existing enterprise manufacturing systems. The project involves connecting our solution with widely used industrial software ecosystems, enabling secure data exchange, real-time communication, and scalable integration with different production environments. This is a long-term and strategically important project for us, and we are looking for someone who und...

    $8 / hr Average bid
    $8 / hr Avg Bid
    118 bids

    We are looking for an experienced n8n automation developer / automation engineer to complete, debug, configure, secure, and production-test an existing AI-powered business automation system. The system is already built as a collection of n8n workflows. The goal is NOT to rebuild everything from scratch unless technically necessary. IMPORTANT: Existing working functions must NOT be removed or replaced without approval. The developer must first review the complete existing system, document all workflows and functions, and then improve it without losing existing functionality. CURRENT / REQUIRED FUNCTIONS: • AI Lead Qualification • Lead Processing and Routing • Recruiting & Candidate Analysis • Media Analysis • Customer Review Analysis • AI Content Gener...

    $710 Average bid
    $710 Avg Bid
    56 bids

    Manejo una solución en Claris FileMaker Pro llamada ServiTech y necesito refinarla cuanto antes. El trabajo incluye: • Formularios: agregar nuevos campos, modificar campos existentes y ajustar la impresión para que cada layout salga limpio y alineado. • Campos relacionados y validaciones: asegurar que las nuevas estructuras se integren sin romper los scripts actuales. • Órdenes de trabajo y reportes: revisar los layouts vinculados, optimizar el flujo de datos y garantizar que los formatos de salida (PDF/impresión) reflejen los cambios anteriores. Trabajo 100 % remoto, aunque es ideal que residas en Chile para facilitar la coordinación horaria y, de ser necesario, una reunión presencial puntual. Si dominas FileMaker Pro, env&ia...

    $17 Average bid
    $17 Avg Bid
    6 bids

    Saya memerlukan sebuah database terstruktur untuk merekam Kegiatan Pelaksanaan dan Pengeluaran Biaya di lapangan. Fokusnya sederhana—saya cukup bisa memasukkan data harian, lalu menarik laporan ringkas kapan saja. Lingkup pekerjaan: • Rancang skema tabel yang memuat minimal: tanggal kegiatan, deskripsi singkat pekerjaan, nama petugas, rincian biaya, serta kolom lampiran (foto/bukti). • Buat antarmuka input yang mudah diisi—boleh berbasis Excel, Google Sheets, atau aplikasi database ringan seperti Airtable; pilih solusi yang cepat saya pelajari. • Sertakan filter dasar dan template laporan (mis. rekap mingguan/per bulan) agar saya dapat melihat total biaya serta daftar kegiatan secara real-time. • Lengkapi dengan panduan penggunaan singkat agar tim lap...

    $30 Average bid
    $30 Avg Bid
    10 bids

    Saya ingin membangun sebuah aplikasi akuntansi berbasis desktop yang fokus pada pengelolaan gaji karyawan di perusahaan teknologi dan mampu meminimalkan potensi penipuan (salary scam). Gambaran singkat • Platform: desktop software (Windows diutamakan, cross-platform akan menjadi nilai tambah). • Lingkup: modul payroll lengkap—perhitungan gaji pokok, lembur, tunjangan, potongan, pajak; pencatatan jurnal akuntansi otomatis; serta dashboard audit internal untuk mendeteksi anomali pembayaran. • Fitur kunci: – Login berbasis peran (HR, Finance, Auditor). – Enkripsi data sensitif dan rekam jejak aktivitas pengguna (audit trail). – Ekspor laporan keuangan bulanan dan tahunan dalam format PDF/Excel. – Integrasi opsional dengan A...

    $644 Average bid
    $644 Avg Bid
    10 bids

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