This tutorial helps to improve your technical expertise in DB2 coding. The tutorial is for anyone who can be a student, a fresher, a software engineer, a mainframe developer, an expert or …

A DB2 database on the mainframe is essentially a collection of tablespaces, tables, and indexes that are logically grouped together. It enables data storage and retrieval while allowing …

Initially, DB2 was designed for mainframe systems but has evolved over the years to support multiple platforms, including Linux, UNIX, and Windows (LUW). DB2 stands out in mainframe …

DB2 is a relational database management system (RDBMS) developed by IBM. It is used to store, retrieve, and manage data efficiently, primarily on mainframe (z/OS) systems, but also …

Initially, DB2 was designed for mainframe systems but has evolved over the years to support multiple platforms, including Linux, UNIX, and Windows (LUW). Objective - We have covered …

The bind process takes the DBRM (Database Request Module) generated from the precompilation of a COBOL + DB2 program. It links the DBRM to a package or plan to …

Why Use a Cursor in DB2 on Mainframe? Cursors are used to manage data retrieved from a DB2 table, particularly when: The query returns multiple rows, and each row needs to be processed …

Error code can be handled in the program by using SQLCODE validation after each query executed. Most of very frequent error codes described below. The SQLCODE

PRECOMPILER - The precompiler takes the COBOL + DB2 source code as an input. It separates the COBOL and DB2 statements into two libraries (COBOL Loadlib and DBRM). It is …

Yes, in most DB2 versions, some changes (like adding a nullable column) can be done while the table is being used. But structural changes (like dropping a column) usually require exclusive …