Migration Premium v1.0.0.159

Easy COBOL DB Migrator - Desktop COBOL Database Migration Tool

Desktop tool for migrating COBOL data structures to modern SQL databases. Analyzes flat files, VSAM, DB2, CICS, and IMS/DL-I, then generates SQL DDL for 5 databases, data access layer code in 6 languages, and ETL migration scripts.

Windows macOS Linux
Starting from $4,995
Easy COBOL DB Migrator - Desktop COBOL Database Migration Tool

About

Easy COBOL DB Migrator is a desktop tool that converts COBOL data structures into modern SQL database schemas, data access layer code, and ETL migration scripts. Point it at your COBOL source files, select a target database and programming language, and the tool generates everything you need to stand up a relational database backend for your modernized application.

The parser pipeline handles six source system types: flat files (sequential and line-sequential), all five VSAM organizations (KSDS, ESDS, RRDS, VRRDS, LDS), embedded DB2 SQL with host variable mapping, CICS file access patterns, and IMS/DL-I hierarchical databases with segment-to-table flattening. PIC clauses are mapped to optimal SQL column types with full decimal precision preserved. VSAM keys become primary keys and indexes. Level-88 conditions become CHECK constraints. IMS parent-child segments become foreign key relationships. OCCURS groups are normalized to child tables. Every mapping decision is documented with a type rationale comment in the generated DDL.

The data access layer generator produces entity classes and repository/DAO classes with full CRUD operations in six languages - ready to integrate with the transpiled business logic from Easy COBOL Migrator. The ETL generator produces database-specific load scripts, validation queries (row counts, constraint checks, data domain ranges), and checksum scripts for data integrity verification after migration.

All processing happens locally on your machine. Your source code is never uploaded, transmitted, or stored externally. The application ships with all required libraries bundled - no runtime dependencies.

For teams migrating mainframe databases from IBM z/OS, VSAM, DB2, IMS, and CICS environments.

Actively developed - see the latest changelog here. Linux and macOS versions are unavailable temporarily.

Need help with complex database migrations? I offer hands-on COBOL migration services for IMS hierarchy flattening, custom ETL pipelines, and end-to-end database re-platforming projects.

How It Works

1

Load your COBOL source

Open a single .cbl/.cob file or an entire folder. The parser auto-detects fixed-format and free-format source, expands COPY/REPLACE directives, and identifies the source system type (flat file, VSAM, DB2, CICS, or IMS).

2

Pick a target database and language

Choose from PostgreSQL, MySQL, SQL Server, Oracle, or SQLite for schema generation. Choose from Java 17, C# 12, Python 3, C++ 17, Rust, or Go for data access layer code. Click Analyze, then Generate All.

3

Review output and migration report

Browse SQL DDL, field mappings, ER diagrams, DAL code, and the HTML migration report across six workspace tabs. Export everything - DDL scripts, load scripts, validation queries, CSV mappings, and HTML reports.

Key Features

Five Target Databases

Generate dialect-correct SQL DDL for PostgreSQL, MySQL, SQL Server, Oracle, and SQLite. Each generator handles identifier quoting, auto-increment strategies, type mappings, and constraint syntax specific to the target database.

Data Access Layer in Six Languages

Automatically generate entity classes and repository/DAO code in Java 17, C# 12, Python 3, C++ 17, Rust, and Go. Each output follows the target language's conventions - JPA annotations for Java, Entity Framework for C#, SQLAlchemy-style for Python, and more.

Six Source System Types

Analyzes flat files (sequential and line-sequential), VSAM (KSDS, ESDS, RRDS, VRRDS, LDS), embedded DB2 SQL, CICS file access, and IMS/DL-I hierarchical databases. Source system type is auto-detected from COBOL constructs.

Full Parser Pipeline

A multi-stage pipeline (CobolLexer, CobolParser, SchemaAnalyzer, Generators) builds a complete model of your COBOL data structures. Handles fixed and free format, PIC clause expansion, USAGE variants, OCCURS, REDEFINES, and all level numbers.

Intelligent Type Mapping

PIC clauses and USAGE types are mapped to the optimal SQL column type for each database. Alphanumeric fields get CHAR or VARCHAR based on length. Decimal precision is preserved exactly. COMP-3, COMP-1, COMP-2, and all binary types are handled.

Key and Constraint Preservation

VSAM RECORD KEY becomes PRIMARY KEY. ALTERNATE KEY becomes a unique or non-unique index based on DUPLICATES. Level-88 condition values become CHECK constraints. IMS parent-child segments become foreign key relationships.

Interactive ER Diagrams

The Schema Visualizer renders entity-relationship diagrams showing tables, columns, primary keys, and foreign key connections. Export diagrams to PNG or SVG for documentation and architecture reviews.

ETL Migration Scripts

Generate database-specific load scripts (COPY, LOAD DATA, BULK INSERT, SQL*Loader, .import), validation queries with row counts and constraint checks, and checksum scripts for data integrity verification.

HTML Migration Reports

Every migration produces a comprehensive HTML report with summary statistics, table details, complete field-to-column mappings with type rationale, migration issues with severity levels, and COBOL I/O to SQL operation mapping.

CSV Mapping Export

Export field mappings, file-to-table mappings, access patterns, and type mappings as CSV files for integration with external tools, documentation pipelines, or project management systems.

COPY/REPLACING Support

Resolves COPY statements with optional REPLACING clauses. Supports pseudo-text and word-form substitution, nested copybooks up to 10 levels deep, and automatic copybook discovery across common directory conventions.

Six-Tab Workspace

Source viewer, Schema DDL with syntax highlighting, Field Mapping table, interactive ER Diagram, DAL Code preview, and HTML Report - all in one window. Switch target database or language from the toolbar and outputs update instantly.

CLI Batch Mode

Run headless migrations from the command line for CI/CD pipelines. Process single files or entire directories. Control output types with --no-ddl, --no-dal, --no-migration, --no-report, and --no-csv flags.

Folder-Wide Analysis

Open an entire folder to discover all .cbl/.cob/.cpy files recursively. Analyze and generate output for every file in one pass. The Project Explorer shows the full folder hierarchy with file status.

EBCDIC Conversion Tooling

Included Python script converts mainframe EBCDIC data files to UTF-8. Supports CP037, CP500, CP1140, and other code pages. Handles fixed-block and variable-length records with conversion statistics.

Smart Naming Conventions

COBOL names like WS-CUSTOMER-ORDER-DATE are automatically transformed to snake_case SQL columns, camelCase Java fields, PascalCase C# properties, or snake_case Python/Rust/Go fields. Common prefixes (WS-, FD-, IX-) are stripped.

Enterprise Data Migration

Parse COBOL flat data files using the analyzed record layout. Handles COMP-3 packed decimal unpacking, binary field parsing, zoned decimal sign handling, and implied decimal insertion. Export as batched SQL INSERTs or CSV.

Cross-Platform

Runs natively on Windows, macOS, and Linux. Ships with all required libraries bundled - no runtime dependencies, no Java, no .NET, no Docker. Download, install, and start migrating.

Supported Languages

Source (Input)

COBOL Flat Files Sequential and line-sequential file organizations. FD record layouts with full PIC clause parsing, USAGE types, OCCURS, REDEFINES, FILLER, and level-88 conditions.
COBOL VSAM KSDS (indexed), ESDS (entry-sequenced), RRDS (relative), VRRDS (variable relative), and LDS (linear). RECORD KEY, ALTERNATE KEY, RELATIVE KEY, and FILE STATUS extraction.
COBOL with DB2 SQL EXEC SQL blocks with cursor declarations, SELECT/INSERT/UPDATE/DELETE, host variable mapping, and null indicator inference.
COBOL with CICS EXEC CICS blocks with FILE, MAP/MAPSET, and COMMAREA references. READ/WRITE/REWRITE/DELETE access patterns documented for SQL replacement.
COBOL with IMS/DL-I CALL 'CBLTDLI' and EXEC DLI blocks. PCB mask and segment I/O area parsing. Hierarchical segments flattened to relational tables with foreign keys.
COBOL Copybooks .cpy, .cbl, .cob, .copy files. COPY ... REPLACING with pseudo-text substitution, nested up to 10 levels.

Target (Output)

PostgreSQL SERIAL primary keys, NUMERIC(p,s), VARCHAR/TEXT, CHECK constraints, COMMENT ON TABLE/COLUMN, double-quote identifiers.
MySQL AUTO_INCREMENT, ENGINE=InnoDB, DECIMAL(p,s), ENUM for level-88, backtick identifier quoting.
SQL Server IDENTITY columns, NVARCHAR, DECIMAL(p,s), bracket identifier quoting, GO batch separators.
Oracle Sequence-based primary keys, NUMBER(p,s), VARCHAR2, COMMENT ON TABLE/COLUMN.
SQLite INTEGER PRIMARY KEY AUTOINCREMENT, TEXT type affinity, IF NOT EXISTS guards, relaxed type system.
Java 17 / C# 12 / Python 3 / C++ 17 / Rust / Go Entity and repository/DAO classes with type-safe fields, CRUD operations, connection helpers, and language-idiomatic naming conventions.

Capabilities

  • Auto Source System Detection Automatically identifies flat files, VSAM (KSDS/ESDS/RRDS/VRRDS/LDS), DB2, CICS, and IMS/DL-I from COBOL constructs - no configuration needed.
  • COBOL Parser Recursive descent parser covering FILE-CONTROL, Data Division (all level numbers), FD records, EXEC SQL/CICS/DLI blocks, PIC clauses, and USAGE types.
  • PIC Clause Expansion Full expansion and analysis of PIC patterns: alphanumeric (X/A), numeric (9/S9), decimal (V), edited formats (Z, *, $, +, -), and shorthand notations.
  • Fixed/Free Format Auto-Detection Automatically determines whether source is fixed-format (COBOL-85) or free-format. Handles column 7 indicators (*, /, -, D) and continuation lines.
  • COPY/REPLACING Expansion Full copybook resolution with pseudo-text and word-form REPLACING, nested copybooks up to 10 levels, and automatic directory/extension discovery.

  • Five Database Dialects Dialect-correct DDL for PostgreSQL, MySQL, SQL Server, Oracle, and SQLite with proper identifier quoting, type mapping, and auto-increment strategies.
  • Precision-Preserving Type Mapping PIC S9(7)V9(2) maps to NUMERIC(9,2) in PostgreSQL, DECIMAL(9,2) in MySQL/SQL Server, NUMBER(9,2) in Oracle. No loss of precision across any target.
  • OCCURS Normalization COBOL repeating groups (OCCURS n TIMES) are normalized to child tables with foreign key relationships. OCCURS DEPENDING ON generates count-tracked child tables.
  • Key and Index Generation VSAM RECORD KEY becomes PRIMARY KEY. ALTERNATE KEY generates unique or non-unique indexes. IMS segments produce foreign key constraints preserving hierarchy.
  • Constraint Inference Level-88 condition values become CHECK constraints or BOOLEAN columns. VALUE clauses become DEFAULT values. FILLER fields are skipped automatically.
  • Drop/Rollback Scripts Every generated schema includes a companion DROP script for clean rollback during development and testing cycles.

  • Entity and Repository Classes One entity class per SQL table with typed fields, plus a repository/DAO class with create, findById, findAll, update, and delete operations.
  • Six Language Outputs Java 17 (JPA/JDBC), C# 12 (Entity Framework), Python 3 (SQLAlchemy-style), C++ 17 (ODBC/native), Rust (sqlx/diesel), Go (database/sql).
  • Type-Safe Field Mapping BigDecimal in Java, decimal in C#, Decimal in Python, std::optional in C++, Option in Rust, sql.NullString in Go - each field uses the right type.
  • Connection Helpers Database connection configuration class or module generated for each language, ready for connection string injection.

  • ETL Load Scripts Database-specific bulk load commands: COPY (PostgreSQL), LOAD DATA (MySQL), BULK INSERT (SQL Server), SQL*Loader (Oracle), .import (SQLite).
  • Validation Queries Row count verification, NOT NULL checks, primary key uniqueness, MIN/MAX/AVG data domain validation, and foreign key orphan detection.
  • Checksum Scripts MD5/HASHBYTES aggregate checksums, numeric column SUM validation, and per-row spot-check hashes using database-specific functions.
  • Enterprise Data Extraction Parse binary COBOL data files with COMP-3 unpacking, EBCDIC conversion, zoned decimal handling, and implied decimal insertion. Export as SQL INSERTs or CSV.
  • Transform Notes Per-field documentation of data transformations needed: date format conversion, COMP-3 unpacking instructions, EBCDIC notes, and fixed-width field positions.

  • HTML Migration Report Summary statistics, per-table column details, complete field mapping with type rationale, migration issues with severity, and access pattern mapping.
  • CSV Mapping Export Four CSV files: field mappings, file-to-table mappings, access patterns, and type mappings for integration with external documentation or project tools.
  • Interactive ER Diagram Tables rendered as labeled boxes with column lists, primary key highlighting, and foreign key relationship lines. Exportable to PNG/SVG.
  • Source Traceability Every generated table and column tracks its source COBOL file, record name, and field name. DDL includes inline comments explaining type rationale.

Screenshots

Easy COBOL DB Migrator - source analysis of LOANDB2.cbl
Easy COBOL DB Migrator - generated PostgreSQL schema DDL from LOANDB2.cbl
Easy COBOL DB Migrator - COBOL to SQL field mapping table for LOANDB2.cbl
Easy COBOL DB Migrator - interactive ER diagram generated from LOANDB2.cbl
Easy COBOL DB Migrator - generated C++ entity classes from LOANDB2.cbl
Easy COBOL DB Migrator - generated C++ repository classes from LOANDB2.cbl
Easy COBOL DB Migrator - COBOL record layout viewer for LOANDB2.cbl
Easy COBOL DB Migrator - HTML migration report with table details for LOANDB2.cbl
Easy COBOL DB Migrator - enterprise data migration engine parsing COBOL data files

Click any image to view full size

System Requirements

Minimum

  • OSWindows 10 21H2 (64-bit) / macOS 12 / Ubuntu 22.04
  • RAM4 GB
  • CPU2 GHz dual-core
  • Storage500 MB free
  • NetworkInternet connection (for activation)

Recommended

  • OSWindows 11 (64-bit) / macOS 15+ / Ubuntu 24.04
  • RAM8 GB
  • CPU2.5 GHz quad-core
  • Storage1 GB free
  • NetworkInternet connection (for activation)

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Changelog

Added

  • Initial stable release

Frequently Asked Questions

Flat files (sequential and line-sequential), VSAM (KSDS, ESDS, RRDS, VRRDS, LDS), embedded DB2 SQL (EXEC SQL), CICS (EXEC CICS), and IMS/DL-I (CALL 'CBLTDLI' and EXEC DLI). The source system type is auto-detected from COBOL constructs. Accepted file extensions: .cbl, .cob, .cpy, .cobol, .cblle, and .sqb.

Yes. The free demo lets you migrate COBOL data structures to PostgreSQL with C++ DAL output (up to 1,000 lines of COBOL). Just enter your email to download - no account or payment required.

Easy COBOL Migrator transpiles COBOL business logic (PROCEDURE DIVISION) to modern programming languages. Easy COBOL DB Migrator converts COBOL data structures (DATA DIVISION, FILE-CONTROL) to SQL database schemas and data access code. They are designed to work together - run the DB Migrator first to generate your database layer, then use Easy COBOL Migrator to transpile the business logic.

PostgreSQL, MySQL, SQL Server, Oracle, and SQLite. Each database gets dialect-correct DDL with proper identifier quoting, type mappings, auto-increment strategies, and constraint syntax. You can switch the target database from the toolbar and the output updates instantly.

Entity/model classes and repository/DAO classes with full CRUD operations (create, findById, findAll, update, delete) plus a connection helper. Available in Java 17 (JPA/JDBC), C# 12 (Entity Framework), Python 3 (SQLAlchemy-style), C++ 17 (ODBC), Rust (sqlx/diesel), and Go (database/sql).

Professional licenses allow 1 machine activation. Enterprise licenses allow up to 5 machine activations. You can deactivate a machine from your members dashboard and reactivate on a different one at any time. Your license never expires - you own it permanently.

Only for initial activation and periodic license validation (once every 30 days). All migration processing happens locally on your machine. Your source code is never uploaded, transmitted, or stored externally.

You keep using the last version you received indefinitely - your license never expires. To continue receiving new versions, bug fixes, and new database/language targets, you can renew with an Annual Maintenance plan ($1,249/year Professional, $3,749/year Enterprise). Maintenance also includes ongoing email support.

Maintenance renewals include all software updates (bug fixes, new features, new database/language targets) plus email support. Professional Maintenance includes 48-hour response time. Enterprise Maintenance includes 24-hour priority response. If your maintenance lapses, you can renew at any time to regain access to the latest version.

Every license includes 90 days of email support from the date of purchase. Professional licenses get standard email support. Enterprise licenses get priority email support with faster response times. After 90 days, ongoing support is included with an active Annual Maintenance plan, or available as a paid service at $200/hr (Professional) or $150/hr (Enterprise).

Yes. The Enterprise edition includes CLI batch mode for headless migrations. Process single files or entire directories with flags to control which outputs are generated (--no-ddl, --no-dal, --no-migration, --no-report, --no-csv).

Yes. IMS/DL-I segments detected via CALL 'CBLTDLI' or EXEC DLI blocks are mapped to relational tables. Parent-child segment relationships become foreign key constraints, preserving the hierarchical structure in a normalized relational schema.

Yes. If your migration needs go beyond what the tool handles automatically (complex IMS hierarchies, custom ETL pipelines, database re-platforming), I offer hands-on migration services at $200/hr for Professional customers and $150/hr for Enterprise customers. Visit the services page or email [email protected] to discuss your project.

Purchase License

$4,995 one-time
  • 1 user, 1 machine activation
  • All 5 target databases
  • All 6 DAL languages
  • GUI + batch processing
  • ETL load scripts and validation queries
  • HTML migration reports
  • 6 months updates
  • 90 days email support
Buy Professional Edition
$14,995 one-time
  • 5 users, 5 machine activations
  • All 5 target databases
  • All 6 DAL languages
  • CLI batch mode for CI/CD integration
  • Enterprise data migration engine (COBOL data file parsing)
  • Project-wide consolidated migration reports
  • CSV mapping export
  • White-label report output (remove product branding)
  • 12 months updates
  • 90 days priority email support
Buy Enterprise Edition
Secure checkout via Stripe Perpetual license - yours forever

Try the Demo

Download the free demo to evaluate before purchasing.

Demo Limitations

  • PostgreSQL output only (no MySQL, SQL Server, Oracle, or SQLite)
  • C++ DAL output only (no Java, C#, Python, Rust, or Go)
  • Maximum 1,000 lines of COBOL
  • No data migration scripts
  • No CSV mapping export
  • No project save/load
  • Watermark comments in generated output

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Support & Maintenance

Included with Purchase

  • 90 days of email support
  • Updates included (see tier)
  • Access to knowledge base

Annual Maintenance

Continue receiving updates, new language targets, and email support after your included period ends.

Professional Maintenance $1,249/yr
All updates + email support (48hr response)
Enterprise Maintenance $3,749/yr
All updates + priority support (24hr response)

Paid Consulting

Need hands-on help beyond product support? Migration consulting is available after your included support period.

  • Professional: $200/hr
  • Enterprise: $150/hr (discounted)

Product Details

  • Version1.0.0.159
  • LicenseCommercial
  • CategoryMigration
  • PlatformsWin / Mac / Linux
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