Bridges

The VSAM-SQL and ISAM-SQL Bridges permit business applications to connect to data sets that have been extracted and migrated into SQL. Both bridges provide the facility to retain existing COBOL I/O and application data definitions. With data now loaded into RDBMS tables, legacy mainframe COBOL applications that use VSAM and/or ISAM and/or SQL databases can now become 100% portable to any hardware/operating system.

VSAM-SQL bridge works in combination with LegacyJ PERCobol Transaction to provide an easy migration path to open platforms for batch COBOL. The VSAM-SQL bridge has no dependences on LegacyJ Transaction Platform, and provides an easy migration path for batch COBOL applications.

No Code Changes
The VSAM-SQL and ISAM-SQL Bridges provide the capability to maintain existing COBOL application VSAM and/or ISAM I/O data definitions; while at execution time continue to access VSAM data that has been migrated into RDBMS tables.

Function
VSAM-SQL and ISAM-SQL permit applications that are heavily dependent on VSAM I/O to migrate to OPEN systems without syntax changes. Functions available are:

• Access KSDS VSAM Datasets (VSAM-SQL)
• Support for all Input/Output Statements (OPEN, WRITE, START, READ, READ NEXT, REWRITE, DELETE, CLOSE)
• XML File Descriptors to define datasets used in a non-transaction environment.

Download VSAM-SQL documentation:

• VSAM-SQL Bridge Getting Started (PDF)
• VSAM-SQL Bridge Users Guide (PDF)