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2 Easy Ways to Read Multiple Files into a Dataframe: PySpark

Mar 26, 2024

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PySpark

IMS DB 4 Top Program Control Blocks

In IMSDB- PCB has a key role. Because this acts as the program’s interface to the database. I-O PCB is the first one we need to give in the Entry statement of a program. There are 4 PCBs available: I-O- PCB: It will do DBCTL requests. If the program not using the IO PCB, so,… Read More ⇢
How to Improve Conversation Smalltalk Topics

Here are Smalltalk topics and questions to practice Read More ⇢
How to Use Working Storage in CICS

COBOL program supports CICS. A developer’s question is why Working-storage and Linkage sections are needed. Below are my answers. Why You Need Working Storage Definitions in CICS You can define error-counts, File descriptions at 01 levels, Record key, Symbolic map, etc..COPY MapnameCOPY DFHAIDCOPY DFHBMSCA You can also define, Transactions-ids, File-length,… Read More ⇢
More on SQL Triggers in DB2 Context

SQL triggers additional points useful for db2 database developers Read More ⇢
CICS-Sequential and Random Access

What is Random access and Sequential access in CICS mainframe Read More ⇢
Top Features in CICS Transaction Server 4.2

It is the latest server. It has a lot of enhancements. We all aware that CICS runs mainly on ZOS. Very high usage in Banking and Insurance domains. Some of the recent changes in this version as follows: Event processing: New capability is, if any system failure or Db2 failure happens new version will… Read More ⇢
How to Define VB files in COBOL Sample Logic

Here’s the logic to define VB files using the OCCURS clause. When you want simplified code always better use OCCURS clause, I am giving here two usages. These two styles save your precious time. Define VB files in COBOL USAGE 1 USAGE 2 The other way of coding VB files:… Read More ⇢
COBOL String modification idea using pointer statement

The popular string modification ways described here with examples. You can use these into your COBOL project directly. Read More ⇢
Xpediter Mainframe Debugger Tutorial (Part 2)

Xpediter tutorial explained useful commands Read More ⇢