MainframeMaster

COBOL Data Lineage

Data lineage tracks the flow of data from source systems through transformations to target systems, providing traceability and visibility into data origins and transformations for governance and compliance.

Data Lineage Tracking Structure

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       WORKING-STORAGE SECTION.
       01 DATA-LINEAGE-TRACKING.
           05 LINEAGE-RECORD.
               10 LINEAGE-ID PIC 9(8).
               10 SOURCE-SYSTEM PIC X(20).
               10 TARGET-SYSTEM PIC X(20).
               10 TRANSFORMATION-TYPE PIC X(20).
               10 TRANSFORMATION-DATE PIC 9(8).
               10 TRANSFORMATION-TIME PIC 9(6).
               10 RECORD-COUNT PIC 9(8).
               10 DATA-QUALITY-SCORE PIC 9(3)V99.
       
       PROCEDURE DIVISION.
       PERFORM INITIALIZE-LINEAGE-TRACKING
       
       INITIALIZE-LINEAGE-TRACKING.
           MOVE FUNCTION CURRENT-DATE TO TRANSFORMATION-DATE
           MOVE FUNCTION CURRENT-TIME TO TRANSFORMATION-TIME
           MOVE 'ETL_PROCESS' TO TRANSFORMATION-TYPE
           MOVE 'CUSTOMER_SYSTEM' TO SOURCE-SYSTEM
           MOVE 'DATA_WAREHOUSE' TO TARGET-SYSTEM
           MOVE 0 TO RECORD-COUNT
           MOVE 0 TO DATA-QUALITY-SCORE.

Create data lineage tracking structures to capture information about data sources, targets, transformations, and quality metrics. Use unique identifiers and timestamps for comprehensive lineage tracking.

Source Data Tracking

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       WORKING-STORAGE SECTION.
       01 SOURCE-DATA-TRACKING.
           05 SOURCE-RECORD.
               10 SOURCE-FILE-NAME PIC X(30).
               10 SOURCE-RECORD-TYPE PIC X(10).
               10 SOURCE-CREATION-DATE PIC 9(8).
               10 SOURCE-LAST-MODIFIED PIC 9(8).
               10 SOURCE-RECORD-COUNT PIC 9(8).
               10 SOURCE-DATA-OWNER PIC X(20).
       
       PROCEDURE DIVISION.
       PERFORM TRACK-SOURCE-DATA
       
       TRACK-SOURCE-DATA.
           MOVE 'CUSTOMER_MASTER.DAT' TO SOURCE-FILE-NAME
           MOVE 'MASTER' TO SOURCE-RECORD-TYPE
           MOVE FUNCTION CURRENT-DATE TO SOURCE-CREATION-DATE
           MOVE FUNCTION CURRENT-DATE TO SOURCE-LAST-MODIFIED
           MOVE 0 TO SOURCE-RECORD-COUNT
           MOVE 'CUSTOMER_SERVICES' TO SOURCE-DATA-OWNER
           
           *> Count source records
           OPEN INPUT SOURCE-FILE
           PERFORM UNTIL EOF
               READ SOURCE-FILE AT END SET EOF TO TRUE
               NOT AT END
                   ADD 1 TO SOURCE-RECORD-COUNT
               END-READ
           END-PERFORM
           CLOSE SOURCE-FILE
           
           DISPLAY 'Source file: ' SOURCE-FILE-NAME
           DISPLAY 'Record count: ' SOURCE-RECORD-COUNT
           DISPLAY 'Data owner: ' SOURCE-DATA-OWNER.

Track source data information including file names, record types, creation dates, modification dates, record counts, and data ownership for comprehensive source lineage documentation.

Transformation Logging

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       WORKING-STORAGE SECTION.
       01 TRANSFORMATION-LOGGING.
           05 TRANSFORMATION-RECORD.
               10 TRANS-ID PIC 9(8).
               10 TRANS-NAME PIC X(30).
               10 TRANS-DESCRIPTION PIC X(100).
               10 INPUT-FIELDS PIC X(200).
               10 OUTPUT-FIELDS PIC X(200).
               10 TRANSFORMATION-RULES PIC X(500).
               10 TRANS-STATUS PIC X.
                   88 TRANS-SUCCESSFUL VALUE 'S'.
                   88 TRANS-FAILED VALUE 'F'.
       
       PROCEDURE DIVISION.
       PERFORM LOG-TRANSFORMATION
       
       LOG-TRANSFORMATION.
           MOVE 12345678 TO TRANS-ID
           MOVE 'CUSTOMER_NAME_FORMAT' TO TRANS-NAME
           MOVE 'Convert customer names to uppercase format' TO TRANS-DESCRIPTION
           MOVE 'SRC_CUSTOMER_NAME' TO INPUT-FIELDS
           MOVE 'TGT_CUSTOMER_NAME' TO OUTPUT-FIELDS
           MOVE 'UPPER_CASE(SRC_CUSTOMER_NAME)' TO TRANSFORMATION-RULES
           
           *> Execute transformation
           PERFORM EXECUTE-CUSTOMER-NAME-TRANSFORMATION
           
           IF TRANSFORMATION-SUCCESSFUL
               MOVE 'S' TO TRANS-STATUS
               DISPLAY 'Transformation successful: ' TRANS-NAME
           ELSE
               MOVE 'F' TO TRANS-STATUS
               DISPLAY 'Transformation failed: ' TRANS-NAME
           END-IF
           
           WRITE TRANSFORMATION-LOG-RECORD.

Log all data transformations with detailed information about input fields, output fields, transformation rules, and execution status. Maintain comprehensive transformation history for lineage tracking.

Data Flow Documentation

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       WORKING-STORAGE SECTION.
       01 DATA-FLOW-DOCUMENTATION.
           05 FLOW-RECORD.
               10 FLOW-ID PIC 9(8).
               10 FLOW-NAME PIC X(30).
               10 FLOW-DESCRIPTION PIC X(100).
               10 SOURCE-SYSTEMS PIC X(200).
               10 TARGET-SYSTEMS PIC X(200).
               10 INTERMEDIATE-SYSTEMS PIC X(200).
               10 FLOW-FREQUENCY PIC X(20).
               10 FLOW-SCHEDULE PIC X(50).
       
       PROCEDURE DIVISION.
       PERFORM DOCUMENT-DATA-FLOW
       
       DOCUMENT-DATA-FLOW.
           MOVE 87654321 TO FLOW-ID
           MOVE 'DAILY_CUSTOMER_SYNC' TO FLOW-NAME
           MOVE 'Daily synchronization of customer data from operational systems to data warehouse' TO FLOW-DESCRIPTION
           MOVE 'CUSTOMER_SYSTEM,ACCOUNT_SYSTEM' TO SOURCE-SYSTEMS
           MOVE 'DATA_WAREHOUSE' TO TARGET-SYSTEMS
           MOVE 'STAGING_AREA' TO INTERMEDIATE-SYSTEMS
           MOVE 'DAILY' TO FLOW-FREQUENCY
           MOVE '02:00 AM EST' TO FLOW-SCHEDULE
           
           WRITE DATA-FLOW-RECORD
           DISPLAY 'Data flow documented: ' FLOW-NAME
           DISPLAY 'Frequency: ' FLOW-FREQUENCY
           DISPLAY 'Schedule: ' FLOW-SCHEDULE.

Document data flows with comprehensive information about source systems, target systems, intermediate systems, frequency, and scheduling. Maintain detailed flow documentation for lineage visibility.

Lineage Impact Analysis

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       WORKING-STORAGE SECTION.
       01 IMPACT-ANALYSIS.
           05 IMPACT-RECORD.
               10 CHANGE-ID PIC 9(8).
               10 CHANGE-DESCRIPTION PIC X(100).
               10 AFFECTED-SYSTEMS PIC X(200).
               10 AFFECTED-TRANSFORMATIONS PIC X(200).
               10 IMPACT-SEVERITY PIC X.
                   88 HIGH-IMPACT VALUE 'H'.
                   88 MEDIUM-IMPACT VALUE 'M'.
                   88 LOW-IMPACT VALUE 'L'.
               10 IMPACT-ANALYSIS-DATE PIC 9(8).
       
       PROCEDURE DIVISION.
       PERFORM ANALYZE-LINEAGE-IMPACT
       
       ANALYZE-LINEAGE-IMPACT.
           MOVE 11223344 TO CHANGE-ID
           MOVE 'Customer ID field length change from 6 to 8 digits' TO CHANGE-DESCRIPTION
           MOVE 'CUSTOMER_SYSTEM,DATA_WAREHOUSE,REPORTING_SYSTEM' TO AFFECTED-SYSTEMS
           MOVE 'CUSTOMER_ID_FORMAT,CUSTOMER_VALIDATION' TO AFFECTED-TRANSFORMATIONS
           MOVE 'H' TO IMPACT-SEVERITY
           MOVE FUNCTION CURRENT-DATE TO IMPACT-ANALYSIS-DATE
           
           DISPLAY 'Impact Analysis Results:'
           DISPLAY 'Change ID: ' CHANGE-ID
           DISPLAY 'Description: ' CHANGE-DESCRIPTION
           DISPLAY 'Affected Systems: ' AFFECTED-SYSTEMS
           DISPLAY 'Severity: ' IMPACT-SEVERITY
           
           IF HIGH-IMPACT
               DISPLAY 'High impact change - requires comprehensive testing'
               PERFORM SCHEDULE-IMPACT-TESTING
           END-IF.

Perform impact analysis for data lineage changes by identifying affected systems, transformations, and downstream processes. Assess impact severity and plan appropriate testing and migration strategies.

Automated Lineage Capture

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       WORKING-STORAGE SECTION.
       01 AUTOMATED-LINEAGE-CAPTURE.
           05 CAPTURE-RECORD.
               10 CAPTURE-TIMESTAMP PIC 9(14).
               10 PROGRAM-NAME PIC X(30).
               10 OPERATION-TYPE PIC X(20).
               10 INPUT-FILES PIC X(200).
               10 OUTPUT-FILES PIC X(200).
               10 PROCESSING-TIME PIC 9(6).
               10 RECORDS-PROCESSED PIC 9(8).
       
       PROCEDURE DIVISION.
       PERFORM CAPTURE-AUTOMATED-LINEAGE
       
       CAPTURE-AUTOMATED-LINEAGE.
           MOVE FUNCTION CURRENT-DATE TO CAPTURE-TIMESTAMP
           MOVE 'CUSTOMER_ETL_PROGRAM' TO PROGRAM-NAME
           MOVE 'DATA_TRANSFORMATION' TO OPERATION-TYPE
           MOVE 'CUSTOMER_MASTER.DAT,ACCOUNT_MASTER.DAT' TO INPUT-FILES
           MOVE 'CUSTOMER_WAREHOUSE.DAT' TO OUTPUT-FILES
           MOVE 0 TO PROCESSING-TIME
           MOVE 0 TO RECORDS-PROCESSED
           
           *> Start timing
           MOVE FUNCTION CURRENT-TIME TO START-TIME
           
           *> Process data
           PERFORM PROCESS-CUSTOMER-DATA
           
           *> End timing
           MOVE FUNCTION CURRENT-TIME TO END-TIME
           COMPUTE PROCESSING-TIME = END-TIME - START-TIME
           
           WRITE LINEAGE-CAPTURE-RECORD
           DISPLAY 'Lineage captured for: ' PROGRAM-NAME
           DISPLAY 'Processing time: ' PROCESSING-TIME ' seconds'
           DISPLAY 'Records processed: ' RECORDS-PROCESSED.

Implement automated lineage capture to track data processing activities, program execution, file operations, and performance metrics. Capture comprehensive lineage information without manual intervention.

Lineage Visualization

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       WORKING-STORAGE SECTION.
       01 LINEAGE-VISUALIZATION.
           05 VISUALIZATION-RECORD.
               10 VISUAL-ID PIC 9(8).
               10 VISUAL-TYPE PIC X(20).
               10 VISUAL-DESCRIPTION PIC X(100).
               10 VISUAL-DATA PIC X(1000).
               10 CREATION-DATE PIC 9(8).
       
       PROCEDURE DIVISION.
       PERFORM GENERATE-LINEAGE-VISUALIZATION
       
       GENERATE-LINEAGE-VISUALIZATION.
           MOVE 99887766 TO VISUAL-ID
           MOVE 'DATA_FLOW_DIAGRAM' TO VISUAL-TYPE
           MOVE 'Customer data flow from source systems to data warehouse' TO VISUAL-DESCRIPTION
           MOVE FUNCTION CURRENT-DATE TO CREATION-DATE
           
           *> Generate visualization data
           STRING 'SOURCE: CUSTOMER_SYSTEM -> STAGING: DATA_STAGING -> TARGET: DATA_WAREHOUSE'
               INTO VISUAL-DATA
           END-STRING
           
           WRITE VISUALIZATION-RECORD
           DISPLAY 'Lineage visualization generated: ' VISUAL-TYPE
           DISPLAY 'Description: ' VISUAL-DESCRIPTION
           DISPLAY 'Data: ' VISUAL-DATA.

Generate lineage visualizations including data flow diagrams, transformation maps, and system relationship charts. Create visual representations of data lineage for better understanding and communication.

Lineage Compliance and Governance

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       WORKING-STORAGE SECTION.
       01 LINEAGE-COMPLIANCE.
           05 COMPLIANCE-RECORD.
               10 COMPLIANCE-ID PIC 9(8).
               10 COMPLIANCE-STANDARD PIC X(30).
               10 COMPLIANCE-STATUS PIC X.
                   88 COMPLIANT VALUE 'Y'.
                   88 NON-COMPLIANT VALUE 'N'.
               10 COMPLIANCE-DATE PIC 9(8).
               10 COMPLIANCE-NOTES PIC X(200).
       
       PROCEDURE DIVISION.
       PERFORM CHECK-LINEAGE-COMPLIANCE
       
       CHECK-LINEAGE-COMPLIANCE.
           MOVE 55667788 TO COMPLIANCE-ID
           MOVE 'GDPR_DATA_LINEAGE' TO COMPLIANCE-STANDARD
           MOVE FUNCTION CURRENT-DATE TO COMPLIANCE-DATE
           
           *> Check compliance requirements
           PERFORM VALIDATE-LINEAGE-COMPLETENESS
           PERFORM VALIDATE-LINEAGE-ACCURACY
           PERFORM VALIDATE-LINEAGE-TIMELINESS
           
           IF LINEAGE-COMPLETE AND LINEAGE-ACCURATE AND LINEAGE-TIMELY
               MOVE 'Y' TO COMPLIANCE-STATUS
               MOVE 'All lineage requirements met' TO COMPLIANCE-NOTES
           ELSE
               MOVE 'N' TO COMPLIANCE-STATUS
               MOVE 'Lineage compliance issues identified' TO COMPLIANCE-NOTES
           END-IF
           
           WRITE COMPLIANCE-RECORD
           DISPLAY 'Compliance check completed: ' COMPLIANCE-STANDARD
           DISPLAY 'Status: ' COMPLIANCE-STATUS
           DISPLAY 'Notes: ' COMPLIANCE-NOTES.

Implement lineage compliance checking for regulatory requirements like GDPR, SOX, and industry standards. Validate lineage completeness, accuracy, and timeliness for governance compliance.

Lineage Maintenance and Updates

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       WORKING-STORAGE SECTION.
       01 LINEAGE-MAINTENANCE.
           05 MAINTENANCE-RECORD.
               10 MAINT-ID PIC 9(8).
               10 MAINT-TYPE PIC X(20).
               10 MAINT-DESCRIPTION PIC X(100).
               10 MAINT-DATE PIC 9(8).
               10 MAINT-STATUS PIC X.
                   88 MAINT-SUCCESSFUL VALUE 'S'.
                   88 MAINT-FAILED VALUE 'F'.
       
       PROCEDURE DIVISION.
       PERFORM MAINTAIN-LINEAGE-DATA
       
       MAINTAIN-LINEAGE-DATA.
           MOVE 33445566 TO MAINT-ID
           MOVE 'LINEAGE_UPDATE' TO MAINT-TYPE
           MOVE 'Update lineage information for new customer system integration' TO MAINT-DESCRIPTION
           MOVE FUNCTION CURRENT-DATE TO MAINT-DATE
           
           *> Update lineage records
           PERFORM UPDATE-SOURCE-LINEAGE
           PERFORM UPDATE-TRANSFORMATION-LINEAGE
           PERFORM UPDATE-TARGET-LINEAGE
           
           IF ALL-UPDATES-SUCCESSFUL
               MOVE 'S' TO MAINT-STATUS
               DISPLAY 'Lineage maintenance successful'
           ELSE
               MOVE 'F' TO MAINT-STATUS
               DISPLAY 'Lineage maintenance failed'
           END-IF
           
           WRITE MAINTENANCE-RECORD.

Maintain and update lineage information as systems and processes change. Implement regular lineage maintenance procedures to ensure accuracy and completeness of lineage documentation.

Data Integrity

Data validation and consistency

Data Logging

Data logging and audit trails