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Contactless MSD Vs EMV Credit cards
Con-tactless credit cards are two types. Those are EMV and MSD. In fact, both are contactles, but the way of working is different.
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NFC ‘Near Field Communication’ New Technology
Near Field Communication (NFC) technology is a standards-based wireless communication technology that allows data to be exchanged between devices that are a few centimeters apart. NFC operates at 13.56 MHz and transfers data at up to 424 Kbits/second. “NFC is distinguished by its intuitive interface and its ability to enable largely proprietary wireless networking platforms…
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DB2 Access Path: What is New Hashing Technique
The clean and crispy idea in DB2 how hash access works explained in a better way to understand quickly.
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What is Threadsafe in CICS
The concept of thread safe well explained in this post.
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SQL COUNT(*) Vs COUNT(DISTINCT)
COUNT function in SQL. Explained how to use to avoid NULL values and Duplicate values.
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How to Say Correctly – If DB2 down will Pre-compilation successful
This is an interview questions if DB2 is down will the pre-compilation successful. Here is correct answer.
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VSAM RRDS: Fixed Vs. Variable Length Records
The differences between variable and fixed-length records, I have simplified and posted these.
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COBOL READ NEXT – How to Code Correctly Unlock now
INDEXED files cam be access in 3 ways (Refer previous post). There are key difference on the options especially how they support differenct file options. Below is the complete list file options.
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3 Top VSAM File Access Modes
VSAM file access modes given in this post to handle VSAM files in COBOL modules.
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CICS: GETMAIN Vs FREEMAIN to Manage Storage
4 Most searched Technics on how to manage storage using GETMAIN and FREEMAIN commands in CICS. CICS makes working storage available within each command-level program automatically, without any specific request from the application program, and provides other facilities for intermediate storage, both within and among tasks. Design for performance describes storage within individual programs. If…
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COBOL Figurative Constants How to Understand Correctly
HIGH-VALUE, HIGH-VALUES Represents one or more occurrences of the character that has the highest ordinal position in the collating sequence used. HIGH-VALUE is treated as an alphanumeric literal in a context that requires an alphanumeric character. For alphanumeric data with the EBCDIC collating sequence, the value is X’FF’. For other alphanumeric data, the value depends…
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