| Table | Table Description | Column# | Alias | Column Description | Data Type | Length | Decimals | Default Value | Constraints |
|---|
| 1 | DDREPLINTABHD | DD: Nametab Header Structure (for Temporary Storage) | 4 | DBASE | Internal Name for Database | nvarchar | 1 | 0 | | |
| 2 | DDXTT_CONV_UC | Nametab Headerstruktur für verzögertes Schreiben | 3 | DBASE | Interner Name für die Datenbank | nvarchar | 1 | 0 | | |
| 3 | DDYTT_CONV_UC | Used during UCMIG within DMO of SUM | 3 | DBASE | Internal Name for Database | nvarchar | 1 | 0 | | |
| 4 | IUUC_DD_SYNC_NTH | System synchronization: Nametab header fields | 7 | DBASE | Internal Name for Database | nvarchar | 1 | 0 | | |
| TOPActivation Program, Conversion Program, DB Utility, MC, SPDD |
| 5 | DDXTT | Nametab header structure for delayed writing | 3 | DBASE | Internal Name for Database | nvarchar | 1 | 0 | | |
| TOPBasic Functions |
| 6 | T011A | Calendar - task description | 5 | DBASE | Database from which data is selected | nvarchar | 3 | 0 | | |
| TOPInformation System |
| 7 | T804A | Report Writer: File Description | 16 | DBASE | Logical database | nvarchar | 2 | 0 | | |
| TOPUpgrade - General |
| 8 | DDMTT | Nametab header structure for delayed writing | 3 | DBASE | Internal Name for Database | nvarchar | 1 | 0 | | |
| 9 | DDMTT_ISU | Nametab header structure for delayed writing | 3 | DBASE | Internal Name for Database | nvarchar | 1 | 0 | | |
| 10 | DDMTT_SAV | Nametab Headerstruktur für verzögertes Schreiben | 3 | DBASE | Interner Name für die Datenbank | nvarchar | 1 | 0 | | |
| 11 | DDXTT_SAV | Nametab Headerstruktur für verzögertes Schreiben | 3 | DBASE | Interner Name für die Datenbank | nvarchar | 1 | 0 | | |
| 12 | DDXTT_SHD | Nametab Headerstruktur für verzögertes Schreiben | 3 | DBASE | Interner Name für die Datenbank | nvarchar | 1 | 0 | | |
| 13 | DDXTT_STD | Nametab Headerstruktur für verzögertes Schreiben | 3 | DBASE | Interner Name für die Datenbank | nvarchar | 1 | 0 | | |
| 14 | DDYTT | Substitution Nametab (shadow-shadow-nametab for DDXTT) | 5 | DBASE | Internal Name for Database | nvarchar | 1 | 0 | | |
| TOPUpgrade Tools |
| 15 | ICNV30L | Nametabs for Incremental Conversion | 4 | DBASE | | nvarchar | 1 | 0 | | |
