Administración de bases de datos Jobs

我目前在重构一套核心业务系统，后端数据库将全部改用 MySQL。为了确保这一次升级既稳又快，我需要一位真正熟悉关系型数据库的高级开发人员全程协助。 主要工作内容 • 数据库设计 – 根据现有业务逻辑，梳理并重新设计表结构、索引与约束，确保高并发下的可扩展性与数据一致性。 • 性能优化 – 对现有查询与存储过程做 Profiling，调整索引、SQL 语句与服务器参数，给出量化的性能提升报告。 • 数据迁移 – 从旧库安全迁移到新库，编写脚本、制定回滚方案，并在迁移后进行完整校验。 验收标准 1. 提供完整的 ER 图、DDL 脚本以及相关文档。 2. 在测试环境下，比现状平均查询延迟至少降低 30%。 3. 迁移过程零数据丢失且可追溯。 开发与测试均以 MySQL 8.x 为准，常用工具（如 MySQL Workbench、Percona Toolkit、pt-online-schema-change 等）请自备。沟通语言可中文或英文，期待与你一起把这套数据库做到极致。

I have several raw files that need to be converted into a clean, reliable database inside MS Excel, and I’m on a tight timeline. Your first task will be to enter the data with perfect accuracy, then scrub it for duplicates, typos, and inconsistent formats. Once the dataset is trustworthy, I’d like you to run a quick analysis—think pivot-table summaries, basic descriptive stats, and any trends that immediately stand out—so I can make fast decisions on next steps. Everything must stay inside Excel; no external tools are required. Please keep your process transparent by noting any assumptions or corrections you make along the way and communicating progress in short, clear updates. Deliverables: • A single Excel file containing the fully structured, cleaned datab...

I need a skilled professional to migrate my database from Lovable to Supabase, along with domain migration. Key Requirements: - Migrate user data, transactional data, and product data. - Current database size is less than 1GB. - All data should be validated during migration. Ideal Skills and Experience: - Experience with database migration, especially to Supabase. - Familiarity with Lovable and domain migration processes. - Strong data validation skills to ensure accuracy and integrity. Please provide relevant experience in your bids.

I’m looking for an experienced Dynamics 365 Business Central specialist who can jump straight into my customer live environment and resolve a series of errors that are halting day-to-day processing. Scope of work • Investigate the symptoms I’ll share on a screen-share session. • Pinpoint the root cause—be it posting setup, extension conflict, data corruption, or permission misconfiguration. • Apply and test the fix directly in Business Central (latest cloud version). • Document what was changed and outline preventive steps so the same fault doesn’t recur. Acceptance criteria • All identified errors are reproducibly cleared. • Core processes (posting, reporting, item availability, customer invoicing) run without warnings. ...

I have a fresh WordPress installation online and a full database backup from my previous site. All I need is for the pages and navigation menus that are stored in that backup to be brought into the new site without disturbing any content that already exists there. You will receive the SQL file (or another format you prefer) right away. Your task is to extract only the Pages and Menus tables / records, import them, and verify that: • every page appears in the Pages list with its correct slug, parent/child hierarchy, featured image, and published status • the main and secondary menus are rebuilt exactly as they were, assigned to the proper theme locations, and all links resolve correctly • no existing posts, media, plugins, or settings on the new site are overwritten...

Scope of Work – Rate, Review & Vote Website Develop a fully responsive, SEO-friendly Rate, Review & Vote website with a modern UI/UX and a comprehensive Admin Panel using the latest stable technologies. People will search these terms and will find us – Such as:- • "Top Rated Cars of 2026" • "Most Trusted Hotels Based on User Ratings" • "Highest Rated Movies This Year" • "India's Top Rated Jewellery Brands" Reference Websites: Public Website • Complete UI/UX Design & Development -MERN Technology is Preferred • Responsive Homepage with custom design including latest & eye-catching graphics. • Dynamic Category Pages & Dynamic Item/Review Pages. • Advanced Search, Filt...

I need an experienced sales specialist who can position and sell infrastructure or full-scale cloud migration services to clients that want better performance from their workloads. Our technical team can execute on AWS, Azure, or GCP, so you’ll have the flexibility to tailor each pitch to the platform that best fits the prospect’s needs. Scope of work • Analyse incoming leads and identify prospects whose primary driver is performance improvement. • Shape migration proposals that clearly show the performance gains we can deliver. • Handle the full sales cycle—discovery calls, solution positioning, objection handling, and closing. • Coordinate with our engineers so that scoping documents, timelines, and estimates line up with what we promise in th...

I’m struggling to locate a specific User ID on my website and need someone who can quickly pull or reveal it for me. The goal is simple: identify and deliver the exact User ID tied to a user record on the site. Please be comfortable navigating typical website back-ends or databases, reading server logs, or crafting a quick script if that’s the fastest route. Once you have the ID, I’d like a brief note on where you found it so I can repeat the process in the future. Deliverable • The correct User ID sent back to me, plus a concise explanation (screenshot or short text) of the retrieval method. That’s all—let me know your approach and how soon you can hand it over.

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I’m running Odoo 19 (Enterprise) and need to stop everyday users from editing the product cost field (standard_price). At the moment anyone can overwrite it, putting our margins at risk. The goal is simple: make that field read-only on every product form and list view for everyone except a small, changeable set of authorised managers. I distinguish those managers by specific user accounts rather than fixed roles, and the exact roster may change over time. Because of that, I’d like a clean, maintainable approach—ideally a dedicated security group that I can toggle per user through Settings—while still meeting the requirement that the restriction is enforced on the frontend (XML) so unauthorised users literally cannot click into the field. Deliverables • XML vi...

I need a well-structured SQL database that turns raw sales transactions into clear insight for our monthly analytics and reporting. The core job is to design the schema, import existing sales data, and build the queries (or stored procedures) that generate our standard monthly sales report with totals, trends, and key breakdowns. Right now the data lives in CSV exports from our point-of-sale system. I want it migrated into a relational database—engine choice is open (PostgreSQL, MySQL, MS SQL, or another you recommend) as long as it handles growth and lets me run additional ad-hoc reports later. Good indexing and normalization are essential because report runs must stay quick when the dataset scales. Deliverables: • SQL scripts for creating all tables, constraints, and index...

After a sudden power cut the server came back up cleanly—Apache, MariaDB/MySQL, Asterisk and all VICIdial services report as running and phpMyAdmin shows the database online. Yet every agent now sees “Invalid Username/Password” on the campaign screen and the admin page just reloads when credentials are entered. Here is what I have already done: examined the Apache, MySQL, Asterisk and VICIdial logs for obvious errors, repaired and optimized the vicidial_users table, and confirmed the credentials being typed are correct. No browser-side tricks helped. We also do not have a usable database backup, so whatever fix you apply must leave the current data intact—no wipe-and-reinstall options are acceptable. I need you to: • Identify the exact point in the s...

I am an older database programmer in need of up-to-date training on how to access and manipulate MySQL databases. I have had one of my website applications updated. It uses Hostinger Hosting for the host sql database on their Linux server. I am using Visual Studio 2026 Community with local host MySQL database. 1. I need someone in USA that can talk to me over the phone and Any Desk onto my desktop 2. Take a look at my Local Host MySQL database and show me a simple way to identify and view the tables, make direct changes to the data within the database, and insert new tables into the database. 3. Show me how to Back-up my operational database on the host server, and to copy my local host database over to the Hostinger server to replace the old database with the updated one. I am a quick st...

Our job portal’s search results page is being dragged down by slow data retrieval, and it’s directly affecting the overall speed and load time of the site. I need someone who can dive in, pinpoint the bottlenecks, and deliver measurable gains without disrupting existing features. Here’s how I see the engagement: • Analyse current queries, API calls, and any middleware that sits between the database and the front-end to uncover why the data feed to the search results is sluggish. • Optimise what you find—whether that means rewriting SQL, adding smart indexing, implementing server-side caching, or fine-tuning backend code. • Validate improvements with before-and-after metrics: Time To First Byte, total page load, and server response time for typic...

Access-to-SQL-Server Migration — Experienced Developer Needed (Paid Assessment First) We run a business ERP built in Microsoft Access (front-end / back-end split, ~40 users). We are looking for an experienced developer to move the data (the Access back-end tables) onto Microsoft SQL Server, while keeping our Access forms as the user interface. The database is small (~300 MB of tables). This project is a short PAID ASSESSMENT — not the full migration. Before committing, we want you to review our system and tell us whether the migration is worthwhile, what it involves, and how many hours it would take. The full migration would be a separate engagement afterwards, only if we decide to proceed. Requirement — proven migration experience We will only consider developers who hav...

I run several production workloads on Oracle 19c and need an expert DBA who can handle three core activities for me around the clock: building new databases from scratch, tuning performance on existing instances, and carrying out version or patch upgrades without downtime to the business. Here is what I expect from you: • Database creation – end-to-end installation and configuration of fresh Oracle 19c environments, including listener setup, tablespaces, and all basic security hardening. • Performance tuning – proactive monitoring and remediation using AWR/ASH reports, SQL Tuning Advisor, indexing strategies, and statistics management to keep response times low. • Upgrade & patching – planning and executing PSU/RU installs or full-version upgrades...

Overview: We are looking for an experienced Backend Developer / Systems Integrator to set up and configure a local MCP (Model Context Protocol) Server on a dedicated Windows PC. The goal is to bridge our local, on-premise SQL Database with AI tools (such as Microsoft Copilot, Claude Desktop, or Cursor) so we can query our database securely using natural language. Remote Access & Working Method (Important): Full Remote PC Access Provided: You will be given direct remote desktop access to our dedicated Windows PC using AnyDesk, TeamViewer, or UltraViewer to perform the entire installation and configuration. Database Access: We will provide you with a secure, Read-Only SQL credential strictly for testing the database connectivity from the MCP server. Technical Environment: Host OS: D...

We are looking for a database developer/compiler who can help us develop and maintain our databases. The ideal candidate will have experience with both SQL and NoSQL databases, and will be able to write efficient and reliable code. They will also be able to work with our team to ensure that our databases are up-to-date and meet our needs.