Professional business data analysis and database cleansing in Zhengzhou
In the digital business era, data has become a company's most important production factor. Yet many companies face the same pain points: piles of dirty data, damaged databases that cannot be attached, heterogeneous data that cannot be linked, and huge transaction records with no way to see into them. As an established IT infrastructure and technology enablement provider based in Zhengzhou, Henan, Fengniu Tech offers one-stop technical support covering low-level database structure repair, large-scale business data cleansing, in-depth correlation analysis of heterogeneous data and custom visual reporting - helping individuals and businesses activate their data assets efficiently.
Core capabilities and technical scenarios
Relational database parsing and repair
We parse MSSQL (MDF/LDF), MySQL (FRM/IBD), Oracle and SQLite database files in depth, and solve complex failures such as databases that cannot be attached, page corruption and transaction inconsistency caused by power loss.
Industrial-grade data cleansing and deduplication
For millions of out-of-order, mixed-format dirty records we perform high-precision format normalisation, null and outlier correction, redundant entry merging and logic-flaw detection, so you receive a standardised, orderly commercial dataset and lower modelling error.
Multi-dimensional data correlation audit
We run multi-dimensional correlation analysis across complex transaction records, system logs and cross-table user activity. By building a time-series analysis topology we help companies spot anomalous transaction chains and trace potential logic flaws and fraud risks.
Custom visual analysis and reporting
Starting from the operating decisions you actually need to make, we extract the underlying core business metrics and develop either Excel pivot analysis templates or interactive dashboard displays, turning cold numbers into clear, scientific and usable guidance.
Standardised analysis and delivery process
1. Requirements study
Define the analysis goals and the metric system
Sign a data confidentiality (NDA) agreement
2. Import and parsing
Load the original database files into our local compute environment
Reconstruct the underlying disk pages and repair table structures
3. Cleansing and modelling
Cleanse with multiple SQL and Python scripts
Cross-correlate and compare, then build the analysis topology
4. Delivery and destruction
Deliver tidy structured tables and reports
Physically wipe and destroy all local analysis data
High-level security and privacy safeguards
Business and enterprise databases often carry highly sensitive trade secrets, core asset records and key customer information. Fengniu Tech gives you this commitment:
- Legal confidentiality guarantee: Before we accept your data, both sides sign a legally binding business confidentiality agreement;
- Local intranet sandbox: All analysis runs on fully offline, physically isolated Fengniu Tech local workstations, with no cloud API transit at all;
- Irreversible physical destruction: Once you confirm the analysis conclusions and take delivery, we immediately run our dedicated disk shredding routine to overwrite the sensitive data across the whole drive and destroy it irreversibly.
Frequently Asked Questions (FAQ)
We support all mainstream relational and non-relational databases, such as SQL Server (MDF), MySQL (IBD), Oracle, PostgreSQL, SQLite and Access, as well as the proprietary encrypted databases built into enterprise management software.
Yes. When a database cannot be attached or suffers page corruption from power loss, system failure, ransomware encryption (in some cases) or deleted table structures, we work down to the binary file level to locate and extract the valuable records and tables.
Data cleansing covers format normalisation, duplicate merging and deduplication, logical correction of null and outlier values, and cross-table validation. We then output database tables or importable structured files in the standard format you require.
Yes. For data lost through accidental Drop/Truncate or Update/Delete operations we can roll back transactions and reconstruct data by analysing the database log files (LDF/Redo Log), and we can also search the physical MDF pages for records marked deleted but not yet overwritten, extract them and restore them to the exact point in time you specify.
For analysis and cleansing at this scale we use high-concurrency local workstations with large, high-speed NVMe arrays. Streaming and chunked processing let us scan the data files offline with multiple threads and extract features without attaching the whole database. The work is fast and efficient, and we can collaborate with your technical team on site or remotely, building efficient custom cleansing scripts while your data stays private.
