COBOL + DB2 Program – Mainframe DB2 Tutorial – Part 8 #COBOL

DB2 for Mainframe z/OS is a relational database management system that runs on the mainframe.A relational database is a database in which all of the data is logically contained in tables. These databases are organized according to the relational model. In a relational database, referential integrity ensures data integrity by enforcing rules with referential constraints, check constraints, and triggers. You can rely on constraints and triggers to ensure the integrity and validity of your data, rather than relying on individual applications to do that work.DB2 is software that you can use to manage relational databases.

COBOL + DB2 Program – Mainframe DB2 Tutorial – Part 8, gives an idea how cobol + db2 program works and how do we use Host variables in the program and very useful for beginners.

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