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DB2 SQL: How to Create Index (1 of 2)
Provide a fast, efficient method for locating specific rows of data in very large tables. (In some cases, all the information needed to resolve a query may be found in the index itself, in which case the actual table data does not have to be accessed.)
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How to Handle Errors in CICS
Error handling methods in CICS. Explained real project ideas. Useful for your projects to use today.
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COBOL: Alternative Key Vs Index
This is really a critical question for all COBOL developers that the difference between Al
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DB2 Tutorial For Software Developers (4 of 5)
DB2 tutorial given in the form of questions and answers. So that any mainframe or DB2 developer can read and implement quickly. Useful to your projects too. Read my previous post(3 of 5). Functions: Types are two : column function scalar function Column functions: compute from a group of rows aggregate value for a specified column(s) avg,…
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XCTL, LINK, RETURN in CICS: Here are Top Differences
Here are the ways, in CICS, the programs are called to respond to proper messages to the screen.
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Mainframe: Batch JCL Conditon Code Confusing Question
Step return code (condition code) and System completion codes are confusing questions in batch jcl. I have given here differences between those.
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Mainframe: MQSeries for Senior Software Developers(1 of 3)
Read basics on cluster and shared queues being used in MQSeries
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COBOL DB2 Program 10 Best Points You Need
In Mainframe, it is possible to run a SQL query without writing a COBOL program. You can do it by using, SPUFI, QMF and IBM Studio. SQL query must begin with EXEC SQL and end with END-EXEC. Second, your SQL query uses COBOL host variables. Host variables in COBOL: Host variables appear with a colon…
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CICS: CEMT, CECI, CEBR Commands Part(2 of 3)
Here is when to use CEMT, CECI and CEBR commands in CICS. CEMT, CECI and CEBR Commands CEMT lets you display and change the status of resources, including programs, transactions, data sets, queues, and terminals. You’ll use CEMT in a CICS test environment often to refresh a copy of a program, allocate and deallocate a…
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Recently asked IMS DC Top Interviews Questions(2 of 2)
IMS DC my second set of interview questions. 1) Which block MFS uses for input message? DIF- Device input format 2) What is second block it uses? MID- Message input descriptor 3) Which block application program uses for output messages? MOD-Message output descriptor 4) What is next block it uses? DOF- Device output format 5)…
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COBOL strings popular ideas to learn now (2 of 2)
What is String concatenation in COBOL. Read my previous post on COBOL Strings-INSPECT VERB. String concatenation involves joining the contents of two or more source strings or partial source strings to create a single destination string. In COBOL, string concatenation is done using the STRING verb. Before I discuss the STRING verb formally, let’s look…
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