Creating Dataviews for Sequential Files › Defining Unmodeled Sequential File Dataviews

Defining Unmodeled Sequential File Dataviews

CA Ideal provides a facility for creating, describing, and maintaining dataview definitions for sequential files without a file model. An unmodeled sequential dataview is recorded as a DATAVIEW entity occurrence in the dictionary. The definition of the fields comprising the dataview is recorded in a VLS member.

The dataview is, like other CA Ideal dataview types, a logical view of the specified fields that can be shared across many applications. The CA Ideal user sees the data as a named collection of fields in a table. PDL statements for accessing data through dataviews apply. You can find any record or collection of records in the table by using the PDL FOR statement in a PDL procedure definition.

The dataview definition is created and cataloged in CA Ideal. It can be displayed, edited, duplicated to a new name or a new version, printed, and deleted.

The unmodeled sequential file dataview is unlike other dataview types in several ways:

• It is created in CA Ideal and can be edited, duplicated to a new version or a new name, and deleted in CA Ideal. The test version of the dataview can be edited, even when it is used as the resource of a production program. You cannot edit the production version of the dataview. However, you can duplicate it to a new version, edit it, and recatalog it. You also need to recompile all programs that use the dataview.
• You can limit access to the dataview to a particular CA Ideal system only if you are an CA Datacom/DB site.