Dictionary header record

The dictionary header is the first Section 2 record (and therefore the second record in the data set). It provides general information about the format of the dictionary records that follow. It is used to describe how many tables are defined in the dictionary section.

Important: The content in this section was created for and applies to the original persistent data store, referred to as PDS V1. A new PDS version (referred to as PDS V2) now exists. PDS V1 will eventually be deprecated.

The data layout for the dictionary header record follows.

Table 1. Section 2 data record format, exported persistent data
Field	Offset	Length	Type	Description
RecID	0	4	Char	Record ID. Contains DD10 for header record 2.
Dictionary Len	4	4	Binary	Contains the length of the entire dictionary.
Header Len	8	4	Binary	Length of the header record.
Table Count	12	4	Binary	Number of tables in dictionary (1 record per table).
Column Count	16	4	Binary	Total number of columns described.
Table Row Len	20	4	Binary	Size of table row.
Col Row Len	24	4	Binary	Size of column row.
Expansion	28	28	---	Unused area.