CTS Consulting & Technical Support Mainframe Developer Interview Questions, Process, and Tips

IMSDB stands for Information Management System Database. It is a hierarchical database management system used for mainframe applications.

• IMSDB is a hierarchical database management system used on mainframe computers.

• It organizes data in a tree-like structure with parent-child relationships.

• IMSDB is commonly used in large organizations for handling high volumes of data efficiently.

• It is often used in conjunction with CO...read more

db2 is a relational database management system developed by IBM.

• Developed by IBM

• Used for managing relational databases

• Supports SQL queries and commands

• Commonly used in mainframe environments

JCL (Job Control Language) is a scripting language used on IBM mainframe operating systems to instruct the system on how to run batch jobs.

• JCL is used to define and control the execution of programs in a batch environment.

• It specifies the input, output, and processing requirements for each job step.

• JCL statements are written in a specific format and are interpreted by the operating system.

• Example: //JOBNAME JOB (ACCOUN

COBOL is a programming language used primarily for business, finance, and administrative systems.

• COBOL stands for Common Business-Oriented Language.

• It is known for its readability and self-documenting nature.

• COBOL is used in industries such as banking, insurance, and government.

• It is designed for processing large volumes of data efficiently.

• COBOL programs are typically structured into divisions, sections, and paragraph