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I need a precise, methodical review of the data held in our production databases to confirm every record is accurate. The assignment is limited to accuracy checks—completeness and consistency are out of scope—so I expect you to zero-in on incorrect values, mismatched formats, and any figures that fail to meet predefined business rules. Here is what I’ll provide once we start: secure, read-only access to the database, a short data dictionary, and the list of critical tables and fields that drive our dashboards. Your task is to analyse those tables, flag inaccuracies, and deliver a concise report describing each issue, how you identified it (SQL, Python, BI tool, etc.), and a recommendation to fix or prevent it. Acceptance criteria • All critical fields scanned for accuracy issues • A reproducible script or query set included • A final summary report highlighting problems and recommended remediation steps If you have strong SQL skills and experience validating large datasets, I’m ready to get this moving quickly.
Project ID: 40547094
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30 freelancers are bidding on average $13 CAD/hour for this job

Hello, I trust you're doing well. I am well experienced in machine learning algorithms, with nearly a decade of hands-on practice. My expertise lies in developing various artificial intelligence algorithms, including the one you require, using Matlab, Python, and similar tools. I hold a doctorate from Tohoku University and have a number of publications in the same subject. My portfolio, which showcases my past work, is available for your review. Your project piqued my interest, and I would be delighted to be part of it. Let's connect to discuss in detail. Warm regards. please check my portfolio link: https://www.freelancer.com/u/sajjadtaghvaeifr
$35 CAD in 40 days
6.4
6.4

I understand you require a precise, methodical review of production database data to confirm the accuracy of every record, specifically focusing on incorrect values, mismatched formats, and figures failing predefined business rules, with completeness and consistency out of scope. I recently completed a similar accuracy validation project for a financial services firm, identifying and rectifying over 500 data discrepancies in their customer transaction logs. I will develop Python scripts utilizing the `pandas` library to connect to your database via SQL alchemy, load the critical tables and fields you provide, and systematically apply the business rules you define to flag any inaccuracies. The output will be a CSV file detailing the row identifier, field name, incorrect value, and the specific business rule violated, ready for your review. What is the expected format for reporting the business rules to be applied? Ready to start as soon as you confirm scope.
$15 CAD in 7 days
5.2
5.2

Hey, We will validate your critical tables against business rules, flag inaccurate values, and deliver a report with reproducible SQL scripts for every finding. Our approach: profile each field first to catch format mismatches and outliers, then run rule-based checks tied to your data dictionary. This surfaces real issues fast without false positives. A couple of quick things to confirm: 1) Which database engine (PostgreSQL, MySQL, SQL Server)? 2) Roughly how many critical tables and rows are we covering? The number quoted here is a starting estimate. The exact cost and timeline will be confirmed after we go through the full scope together. Looking forward to talking through the details. Faizan
$22 CAD in 40 days
4.3
4.3

I understand you're seeking a rigorous validation of your production database's data accuracy, focusing on incorrect values, format deviations, and rule violations, much like I've successfully implemented in previous projects involving large-scale data integrity assessments for financial reporting. My approach prioritizes efficiency and precision to deliver actionable insights. My plan involves leveraging Python with libraries like Pandas for data manipulation and a custom SQL scripting approach to query your provided critical tables and fields. I will develop targeted SQL queries to identify records failing predefined business rules (e.g., range checks, data type adherence) and flag format inconsistencies. The output will be a structured report detailing each identified inaccuracy, its location, and the specific rule or pattern it violates. To ensure alignment, could you clarify if there are any specific tolerance levels for minor format variations that should be considered acceptable? Additionally, are there any existing validation scripts or tools you've used previously that you'd prefer I integrate with or emulate? I'm available for a brief call to discuss these details and how I can efficiently deliver your accuracy report.
$15 CAD in 7 days
4.0
4.0

Nice to talk you , After reading in detail the requirements of your project and concluding that they match my areas of knowledge and skills, I would like to introduce myself. My name is Anthony Muñoz and I am the lead engineer for DS Pro IT agency. I have worked for over 10 years in Backend and software development and have successfully done multiple jobs. It will be a pleasure to work together to make your project a reality. Please feel free to contact me. I´m looking forward to working with you. I really appreciate your time and remain attentive to any request or question. Greetings
$26 CAD in 40 days
3.8
3.8

Krishna here from Delhi. As a technical aficionado, I fully comprehend and appreciate the importance of data accuracy in driving business decisions. With my extensive experience in utilizing SQL, Python, and BI tools to validate and analyze substantial datasets, I am well-equipped to handle this project's requirements. The rigorous eye for detail that comes with validating data runs parallel to my approach - leaving no stone unturned. Working with cloud-based AI models and designing efficient data pipelines has honed my skills in developing reproducible scripts and queries. This means that even after my assignment concludes, you'll have the tools necessary to maintain the accuracy of your production databases. Additionally, my proficiency in predictive analytics will ensure that not only can I assess the current state of your data accurately but also recommend strategies to prevent future inaccuracies. Partnering with me guarantees you receive a thorough report with highlighted issues, their potential implications on your business and actionable solutions to address each one. Let's connect and reinforce the foundation of your data-driven decision-making.
$12 CAD in 40 days
3.8
3.8

Hi, I have 8 years of experience as a Database Developer, specializing in SQL, Oracle PL/SQL, data analysis, and validating large datasets in production environments. I understand that your focus is strictly on data accuracy rather than completeness or consistency. My approach is to carefully analyze the critical tables and fields, validate records against the provided business rules, identify incorrect values, format mismatches, and invalid data, and document every finding with clear evidence. For this project, I will: * Review all critical tables and fields using your data dictionary and business rules. * Write efficient, reusable SQL queries to identify accuracy issues. * Document each issue, including how it was detected and its potential impact. * Provide reproducible SQL scripts (and Python if needed) so the validation process can be repeated. * Deliver a concise report with findings, recommendations, and preventive measures to improve data quality. I'm available to start immediately and can begin reviewing the database as soon as read-only access and the documentation are provided. I look forward to helping you ensure the accuracy and reliability of your production data.
$12 CAD in 40 days
3.2
3.2

Hello, accuracy checks – you need a precise, methodical review of the data held in your production databases. I'll pull each critical table with a Python‑pandas + SQLAlchemy pipeline, apply the business‑rule regexes and type checks, and output a reproducible CSV of mismatches; the script will be version‑controlled so you can rerun it anytime, keeping your dashboards reliable. I’ll also add a small routine to flag NULL vs empty strings and enforce date‑format standards, preventing silent data drift. Do you prefer the report as an Excel workbook with pivot summaries, or plain CSV files? Looking forward to working with you. Artur Giżycki
$20 CAD in 40 days
2.0
2.0

Hi! I can perform a precise accuracy-focused audit of your production database using SQL and/or Python, based on your data dictionary and defined business rules. I will systematically scan the critical tables and fields, identify incorrect values, format mismatches, and rule violations, and document each issue with reproducible queries or scripts. You’ll receive a concise report summarizing findings, root causes, and clear remediation recommendations, along with a full set of validation queries so the process is fully repeatable. I’ve worked on similar large-scale data validation tasks and can start immediately once access and schema details are provided.
$12 CAD in 40 days
2.2
2.2

Lets chat, a free consultation and no obligation. I understand you need a clean, professional, and user-friendly solution for your "Database Data Accuracy Validation - 29/06/2026 03:00 EDT" project. My skills in PHP, Java, JavaScript are a perfect fit for this project. While I am new to freelancer.com, my extensive experience delivers integrated, automated solutions. Regards, Jason McLachlan
$10 CAD in 3 days
1.9
1.9

Having delivered real, measurable results through my AI and data engineering expertise for over a decade, I'm confident that I can exceed your expectations on this project. My exceptional track record in utilizing Python and SQL to validate large datasets speaks directly to your need for a comprehensive database review focused on accuracy. As an addition to precise confirmation, I always center my efforts on value creation. My work background across multiple sectors and enterprise environments has trained me to identify not just data inaccuracies but their potential impact on business decisions. That's why my accuracy verification strategies go beyond just checking formats; they include an understanding of business rules and how data quality impacts critical operations. Lastly, I appreciate that thorough documentation is crucial in your project. Rest assured, I don't compromise on giving detailed reports and scripts. With reproducibility at the forefront of my solutions, you'll receive a script or query set that not only validates accuracy but provides a blueprint for future audits. Plus, my final summary report will not only illuminate every issue discovered but also provide actionable recommendations moving forward. Let's work together to ensure your databases remain trustworthy pillars for effective decision-making!
$13 CAD in 40 days
2.7
2.7

Hi, I have strong SQL and data validation experience and can perform a thorough accuracy audit of your production database, delivering reproducible SQL/Python scripts along with a clear report of all identified inaccuracies and remediation recommendations. 1. Approximately how many tables and records are included in the scope of the audit? 2. Which database system are you using (MySQL, PostgreSQL, SQL Server, Oracle, etc.), and do you have predefined business rules available for validation? if looking for expert then lets connect (expereince 7 yrs in development)
$12 CAD in 40 days
1.5
1.5

Hi there, I can thoroughly review your production database to identify accuracy issues in the critical fields and provide clear, well-documented findings. You'll receive a concise report along with reproducible validation queries/scripts and practical recommendations to help prevent similar issues in the future. I’m ready to get started and deliver the review promptly.
$8 CAD in 30 days
1.7
1.7

Hi! Data-accuracy validation across production tables is exactly the methodical work I do with SQL + Python. I'll stay strictly on accuracy—incorrect values, mismatched formats, business-rule violations—and leave completeness/consistency out of scope as you specified. My approach: - Review your data dictionary + critical-table list and translate each business rule into explicit, testable checks - Run targeted SQL against the read-only DB to flag invalid values, bad formats and out-of-range figures - Use Python/pandas for cross-field rule checks and pattern validation SQL can't easily express - Quantify each issue (counts, % affected, sample rows) so impact is clear - Deliver a concise report: each inaccuracy, how it was detected (SQL/Python), and a fix recommendation - Re-runnable scripts so you can re-validate after corrections I work cleanly with read-only access and never modify source data. Question: which engine are we on (Postgres / MySQL / SQL Server), and roughly how many critical tables/fields are in scope? - Souvik
$12 CAD in 30 days
0.8
0.8

With a robust background in Database Administration and Programming, I'm confident in my ability to provide an exceptional solution for your Data Accuracy Validation project. My comprehensive experience working with large datasets, especially using SQL, positions me to be the best fit for this task. I specialize in extracting valuable insights from databases and can effectively zero-in on any discrepancies or inconsistencies—a skill critically needed for this project. In terms of the specifics you require, I am fully equipped to handle these tasks. My SQL and Python skills enable me to draw on accurate data from your production databases, which will be invaluable in checking accuracy across every record. Additionally, my methodical approach will guarantee that all critical fields are thoroughly scanned for deviations from predefined business rules. At the end of the project, you can count on me to deliver a concise report with actionable recommendations and reproducible scripts or query sets.
$10 CAD in 40 days
0.0
0.0

Based on my extensive experience in data processing, analysis, and financial management for over a decade, I am confident that I can deliver the level of precision and thoroughness required for your accuracy validation project. In my previous roles, one of my key responsibilities was to establish rigorous data processes and ensure data integrity, which aligns perfectly with the requirements of this project. I have engaged with tasks similar to this whereby coordinating input from multiple departments and reconciling complex financial figures required an advanced understanding and use of SQL. My strong proficiency in SQL backed by quick problem-solving abilities is noteworthy in this context, as it enabled me to manage massive datasets and ensure nothing slips through the cracks. I am dedicated to delivering high-quality outcomes within established deadlines. My attention to detail is impeccable, and I consider accuracy as mandatory as you do - 100% data accuracy is my past record. I am confident in performing a comprehensive analysis of your database, flagging any inaccuracies and presenting them in a concise report with recommendations using either SQL or Python. You can trust in my ability to meticulously navigate critical tables and fields while ensuring strict adherence to your existing business rules at all times. Let's get started on cleansing your dataset for optimal efficiency!
$12 CAD in 40 days
0.0
0.0

Hi there, I have carefully reviewed your project requirements regarding the data accuracy audit of your production databases. With strong expertise in SQL, Python, and data cleansing, I am confident in my ability to perform the methodical review you require. My approach to this project includes: Data Analysis: I will conduct a thorough scan of the critical tables and fields provided to identify incorrect values, mismatched formats, and any figures failing to meet your defined business rules. Methodical Reporting: I will provide a clear, concise report detailing every identified issue. Technical Documentation: For every flag raised, I will include the reproducible SQL queries or Python scripts used to identify the problem, along with professional recommendations for remediation and prevention. I understand the scope is strictly limited to accuracy checks and I am fully prepared to work with the read-only access and data dictionary you provide. I am available to start immediately and can commit to your required hours to ensure this is resolved quickly. I look forward to discussing how I can help maintain the integrity of your data. Best regards, [Gohel Hemanshu]
$11 CAD in 40 days
0.0
0.0

Hello, I can help you with database data accuracy validation by carefully reviewing records, identifying incorrect values, mismatched formats, and data issues based on your business rules. I have experience with SQL, data analysis, data cleaning, and validation processes to ensure reliable and accurate datasets. I will provide: ✅ Database record accuracy checks ✅ SQL/Python-based validation queries ✅ Identification of incorrect or inconsistent data ✅ Detailed issue report with findings ✅ Recommendations to prevent future data errors ✅ Clean and organized validation documentation I focus on accuracy, attention to detail, and delivering clear reports that help maintain high-quality data. I’m ready to start and discuss your database requirements. Regards, Acute Tech Solutions
$12 CAD in 40 days
0.0
0.0

I understand the crucial need for accurate data in your production databases. My approach involves meticulously scanning all critical fields for inaccuracies, using SQL queries to pinpoint incorrect values and mismatched formats. With a keen eye for detail, I will deliver a concise report outlining each issue and recommending effective remediation steps. By leveraging my strong SQL skills and experience in validating large datasets, I am well-equipped to tackle this project efficiently and promptly. I offer a free consultation to delve deeper into your requirements, discuss strategies, and ensure a smooth project flow. How do you envision the timeline for this data accuracy validation task? Let's connect and explore the best approach together.
$8 CAD in 7 days
0.0
0.0

Hello, Your project aligns perfectly with my expertise in SQL, Python, Data Analysis, and Business Intelligence. I have experience working with SQL-based data analysis and validating datasets to ensure records comply with business rules and reporting requirements. I will systematically review your critical database tables to identify incorrect values, invalid formats, and records that violate predefined business rules. Using reproducible SQL queries (and Python where appropriate), I will document every issue, explain how it was identified, and provide practical recommendations to correct or prevent future inaccuracies. My deliverables will include well-structured SQL scripts, a concise validation report, and a clear summary of findings that can be easily reproduced and audited. My focus is on delivering accurate, reliable, and well-documented results while maintaining a methodical approach throughout the project. I am available to start immediately and would be happy to discuss your validation requirements in an interview. I look forward to the opportunity to contribute to your project. Best regards, Gowri K
$10 CAD in 20 days
0.0
0.0

Ghaziabad, India
Member since Nov 28, 2017
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