You are tasked with processing sales transaction data, and some transactions may be recorded twice due to system glitches. How would you ensure that such duplicate transactions are detected and managed correctly?
- Implement a check during data entry to prevent duplicate transactions
- Perform a sequential search on the transaction data to identify duplicates
- Use a COBOL program to perform a hash function on transaction IDs
- Utilize a COBOL file control system to flag and handle duplicate transactions
Utilizing a COBOL file control system to flag and handle duplicate transactions is a robust approach. This involves setting up mechanisms to detect and manage duplicates during the processing of sales transaction data, ensuring data accuracy and integrity.
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