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Unit 3, Section 7: Documentation for screen formats and segment format review

This video describes the information that you need to know to format messages, such as segment formats, fill characters, logical paging, and MODname requirements.

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Unit 4, Section 14: Conversational programming, part 2

This video concludes the discussion of conversational programming, more specifically, how to terminate a conversational transaction, processing options, and conversational programming examples.

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Unit 4, Section 13: Conversational programming, part 1

This first video describes conversational transactions that permit IMS to retain information across multiple transaction iterations.

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Unit 4, Section 12: Limiting output message segments, and wait-for-input transactions

This video describes limiting output message segments. Depending on how a transaction code is defined to IMS by IMS Systems Programmers, IMS can restrict both the size of output message segments and…

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Unit 4, Section 11: INQY (inquiry) call

The INQY call can only be used with an AIB. This video describes the INQY call, which can provide information about the state of resources, the execution environment, and other facts that can…

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Unit 4, Section 10: Application interface block (AIB)

This video describes the AIB, which is an interface that provides a slightly different way for your program to issue a DL/I call. For some newer IMS calls, you can use only an AIB.

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Unit 4, Section 9: Exception handling

This video describes various calls and functions that you can use for exception handling, specifically, ROLL and SET calls.

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Unit 4, Section 8: Initialize (INIT) call

This video describes in more detail how the INIT (initialize) call works. The INIT call can receive status regarding database availability by checking each DB PCB, and it can inform IMS that it is…

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Unit 4, Section 7: Managing database availability

This video provides an overview of how you can manage database availability by using the INIT call.

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Unit 4, Section 6: Log, statistics, and SNAP calls

This video describes the following service calls:LOG: This call is an explicit call interface that permits a program to write desired data to the log. STAT: This call is of primary interest to IMS…

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Unit 4, Section 5: Checkpoint and restart

This video describes the program flow of checkpoint (CHKP) and restart (XRST). The CHKP and XRST DL/I service calls are frequently used together so that a failed batch or BMP or JBP program can be…

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Unit 4, Section 4: I/O PCB

The I/O PCB is available and useful in both IMS TM and non-IMS TM environments (that is, for IMS transactions and Batch DL/I regions) that can process IMS system service calls. This video provides an…

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Unit 4, Section 3: GSAM considerations

GSAM is a simple IMS database access method that is available for any IMS (IMS DB, IMS TM, or IMS DB/DC) system that provides for enhanced data integrity following a program or system failure. This…

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Unit 4, Section 2: Batch message processing, part 2

This second video on batch message processing describes the services provided by the IMS control region and converting a batch program to a BMP.

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Unit 4, Section 1: Batch message processing, part 1

This first video describes batch message processing, BMP input, and queuing.

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Unit 3, Section 16: Lab 2: Message Format Service

This lab alters the message format used for the transaction from Lab 1, processes the transaction using the new format, and returns the appropriate response to the originating terminal.

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