How can we process two files by comparing key fields?

How can we process two files by comparing key fields?

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: easy

标签: interviewbit, cobol, topic-specific, mainframe

参考答案摘要

There are 2 possible approaches for this: Approach 1: We can read records from both files, if the key fields match, then they can be ignored. If upon key comparison, the results are unequal, then we i...

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