Introduction
QMF stands for Query Management Facility. It is a tool developed by IBM that helps users interact with databases — especially IBM’s Db2 (a relational database system used on mainframes).
Think of QMF as a friendly interface that allows users to:
- Write and run SQL queries
- View data
- Create reports
- Analyze information
- Share data in a readable format
It was originally designed to work with mainframe systems, particularly IBM z/OS, but now also works on other platforms.
What is QMF used for?
QMF is mainly used for:
- Querying Databases - Users can write SQL queries to extract data from DB2 tables.
- Generating Reports - Users can format query results into professional-looking reports with:
- Headers, footers, and page breaks.
- Sorting, grouping, and calculations (sum, average, etc.).
- Charts and graphs (in newer versions).
- Ad-Hoc Data Analysis - Business users can quickly retrieve data without writing complex programs.
- Exporting Data - Query results can be exported to file, csv and notepads.
- Storing and Reusing Queries - Users can save frequently used queries for later execution.
Advantages
- Easy-to-use GUI and command-line interface.
- Business users can query data without COBOL/JCL knowledge.
- Optimized for DB2, making queries efficient.
- Flexible formatting options for professional reports.
- Works well with TSO/ISPF, SPUFI, and other IBM tools.
- Saves time by storing and reusing SQL queries.
Disadvantages
- Not designed for distributed databases like Oracle or MySQL.
- Complex queries on huge tables can be slow.
- Requires IBM licenses, which can be expensive.
- Some reporting features require training.