Mainframe COBOL to Java, C# & Cloud

Migrating Tandem COBOL Applications to Java or C#

Recognized for its fault-tolerant system, the Tandem/Tandem Non-Stop dialect of COBOL aligns closely with the ANSI COBOL 74/85 Standards. Key differences lie in the COBOL language extensions, screen definitions, and database API. SoftwareMining has successfully migrated multiple Tandem applications, offering transitions to both Java and C#.

• Tandem Screen Definition

  Tandem Screens are typically defined externally. These COBOL screens are commonly used in Conversational programs designed for client-server deployment. SoftwareMining adapts these Conversational applications to an Application-Server architecture, converting screen definitions to a JSP/XHTML format suitable for web servers. This change allows for browser access during runtime. While the screens maintain their traditional "green-screen" look, they can be modernized for a refreshed appearance.

• Julian Date/Time Handling

  Tandem offers specialized routines for handling Julian Date formats, such as:

  ENTER TAL "JULIANTIMESTAMP"
  ENTER TAL "CONVERTTIMESTAMP"
  ENTER TAL "INTERPRETTIMESTAMP"
                  

  Optimizing performance requires translation to Java/C# default date-time handling.

• Embedded SQL

  Embedded SQL facilitates database access. To streamline future migrations between databases, the SQL embedded within programs can be externalized.

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