Synopses & Reviews
Are you maintaining a COBOL legacy system? If so, there's a good chance you need to know something about IMS (or DL/I, on a VSE system), the leading database system before DB2 came into prominence.
And here's the way to learn! This how-to book will have you handling batch DL/I programs in no time. You'll learn the COBOL elements for working with DL/I databases, why error processing is a must, how to use secondary indexing, how to process logical databases or databases with logical relationships, and a little something about coding online programs using IMS DC or CICS (you'll need one or more of our other books, though, to gain a complete set of DC or CICS skills).
You'll even find out how different types of DL/I data bases are stored and accessed, so you can program more logically and efficiently for the type you're working with. That's information you can't find anywhere else!