IMS to SQL migration : Part 4 of 4

Last post in a four-part series.

Read the previous parts ->

Program adaptation

The first three posts of this series described the design of the new database and the migration of data. This last post describes how the applications will be modified to allow them to access the new database instead of the old IMS database.

This program adaptation must meet two constraints :

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IMS to SQL migration : Principles (part 1 of 4)

First post in a four-part series.

The IMS to SQL migration is broken down into two phases :

  • the first phase is the creation of the new database (OracleDB2...) that offers the advantages of the SQL language and the migration of the data.
  • the second phase is the transformation of the application programs in order for them to use the new database, without changing the functionalities. 

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