Business Rules Extraction: An Overview

One of the biggest impediments to modernizing legacy systems is parsing-out the business rules from the source code. Business analysts either don't have the tools to efficiently extract the code or don't have access to it if they do. Manual extraction and analysis are time-consuming and tedious, and that's where automated business rule extraction technology from a company like AveriSource can save the whole project.


One of the biggest impediments to modernizing legacy systems is parsing-out the business rules from the source code. Business analysts either don't have the tools to efficiently extract the code or don't have access to it if they do. Manual extraction and analysis are time-consuming and tedious, and that's where automated business rule extraction technology from a company like AveriSource can save the whole project.

Why is Extraction Necessary?

Each core business function is handled by a separate element running in the background. When legacy applications conflict, are redundant or become outdated, it can cause these functions to grind to a halt. That's when modernization becomes essential to continued, seamless deployment. Extracting and analyzing the back-end functionality provides the foundation and documentation necessary to configure the new system.

What's the Best Approach?

Reverse-engineering the code is one approach. But without the right tools, it's impossible for non-IT savvy analysts to understand the relationships between the rules and how the legacy code is affected by rule changes. Automation streamlines the process by taking a multi-faceted, comprehensive approach without requiring extraordinary tech knowledge from the team.

Automated source code documentation and technological analysis tools:

- Categorize business rules and assign context, which allows the app modernization activities to be segmented and prioritized
- Determine which rules are likely to impact business function the most
- Translates the most impactful rules so they're clear and understandable to the modernization team
- Increases focus to speed the modernization process

A robust business rules extraction analysis program from a company like AveriSource will support a broad range of programming languages, including coding from ancient legacy apps written in Assembler and RPG or COBOL platforms like IBM, AS/400 and Unisys. This capability is useful not only in legacy apps modernization, but for:
- Cloud migration
- Requirement gathering
- App management
- App replacement

The need for automated rules extraction isn't just limited to large mainframe systems with millions of lines of coding to sort through. The sheer number of apps and increased reliance on them to run businesses of any size - in addition to the development of mobile platforms, rapid advancement of technology and relational redundancy of apps - are contributing factors.

Business rule mining and analysis for large applications requires a modern approach. Using automation technology does the digging for you. In order to justify the investment, your automation technology should be scalable, highly organized and interactive while supporting a range of source code protocols.
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