The second class of printed output is the Journal Displays. These displays allow the user to view specific database changes. In addition, the before and after images of database record modifications are reported by record ID, database key, or program name. Prior to being reported, spanned or fragmented records are recomposed, and compressed records are decompressed. The journal displays character/hexadecimal representations of the database changes and optional subschema view of field changes using the Program Display.
Journal Displays provide the user the ability to effectively monitor changes to sensitive record types, scrutinize performance problems, and to assist in program debugging. Journal Displays are divided into three major types:
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