| Table | Table Description | Column# | Alias | Column Description | Data Type | Length | Decimals | Default Value | Constraints |
|---|
| 1 | DDREPLINTABHD | DD: Nametab Header Structure (for Temporary Storage) | 8 | DYSTAMP | Screen time stamp | nvarchar | 14 | 0 | | |
| 2 | DDXTT_CONV_UC | Nametab Headerstruktur für verzögertes Schreiben | 7 | DYSTAMP | Dynpro Timestamp | nvarchar | 14 | 0 | | |
| 3 | DDYTT_CONV_UC | Used during UCMIG within DMO of SUM | 7 | DYSTAMP | Screen time stamp | nvarchar | 14 | 0 | | |
| 4 | IUUC_DD_SYNC_NTH | System synchronization: Nametab header fields | 11 | DYSTAMP | Screen time stamp | nvarchar | 14 | 0 | | |
| TOPActivation Program, Conversion Program, DB Utility, MC, SPDD |
| 5 | DDXTT | Nametab header structure for delayed writing | 7 | DYSTAMP | Screen time stamp | nvarchar | 14 | 0 | | |
| TOPUpgrade - General |
| 6 | DDMTT | Nametab header structure for delayed writing | 7 | DYSTAMP | Screen time stamp | nvarchar | 14 | 0 | | |
| 7 | DDMTT_ISU | Nametab header structure for delayed writing | 7 | DYSTAMP | Screen time stamp | nvarchar | 14 | 0 | | |
| 8 | DDMTT_SAV | Nametab Headerstruktur für verzögertes Schreiben | 7 | DYSTAMP | Dynpro Timestamp | nvarchar | 14 | 0 | | |
| 9 | DDXTT_SAV | Nametab Headerstruktur für verzögertes Schreiben | 7 | DYSTAMP | Dynpro Timestamp | nvarchar | 14 | 0 | | |
| 10 | DDXTT_SHD | Nametab Headerstruktur für verzögertes Schreiben | 7 | DYSTAMP | Dynpro Timestamp | nvarchar | 14 | 0 | | |
| 11 | DDXTT_STD | Nametab Headerstruktur für verzögertes Schreiben | 7 | DYSTAMP | Dynpro Timestamp | nvarchar | 14 | 0 | | |
| 12 | DDYTT | Substitution Nametab (shadow-shadow-nametab for DDXTT) | 9 | DYSTAMP | Screen time stamp | nvarchar | 14 | 0 | | |
| TOPUpgrade Tools |
| 13 | ICNV30L | Nametabs for Incremental Conversion | 8 | DYSTAMP | | nvarchar | 14 | 0 | | |
