---
source_files:
  - Common/DTS.Common.Storage/Classes/Abstract/MMEPossibleChannels.cs
  - Common/DTS.Common.Storage/Classes/Abstract/DbVersions.cs
  - Common/DTS.Common.Storage/Classes/Abstract/Settings.cs
  - Common/DTS.Common.Storage/Classes/Abstract/VersionTable.cs
  - Common/DTS.Common.Storage/Classes/Abstract/TestObjectChannelSettings.cs
  - Common/DTS.Common.Storage/Classes/Abstract/Tags.cs
  - Common/DTS.Common.Storage/Classes/Abstract/DigitalOutputSettings.cs
  - Common/DTS.Common.Storage/Classes/Abstract/LabratoryDetails.cs
  - Common/DTS.Common.Storage/Classes/Abstract/Squib.cs
  - Common/DTS.Common.Storage/Classes/Abstract/CalculatedChannels.cs
  - Common/DTS.Common.Storage/Classes/Abstract/Users.cs
  - Common/DTS.Common.Storage/Classes/Abstract/LevelTriggers.cs
  - Common/DTS.Common.Storage/Classes/Abstract/SensorDB.cs
  - Common/DTS.Common.Storage/Classes/Abstract/TestSetups.cs
generated_at: "2026-04-16T02:11:23.946439+00:00"
model: "Qwen/Qwen3-Coder-Next-FP8"
schema_version: 1
sha256: "275c64f80988749d"
---

# Abstract

## Documentation: Storage Abstraction Layer – Table and Field Constants

---

### 1. Purpose  
This module provides a centralized, strongly-typed abstraction layer for database schema metadata within the DTS Storage subsystem. It defines `abstract` classes containing `const string` table names and `enum` types for field names across multiple database tables (e.g., `tblSettings`, `tblSensors`, `tblTestSetups`). These constants are used throughout the codebase to avoid hard-coded string literals in SQL queries, ORM mappings, or data access logic—ensuring consistency, reducing typos, and enabling refactoring safety. The module does *not* contain business logic, data access implementations, or validation; it is purely a metadata definition layer.

---

### 2. Public Interface  

All types are `abstract` classes with no instance members. Public members are `const` strings and `enum` declarations.

| Type | Member | Signature | Description |
|------|--------|-----------|-------------|
| `MMEPossibleChannels` | `Table` | `public const string Table = "tblMMEPossibleChannels";` | Table name for MME possible channel configurations. |
| `DbVersions` | `DbVersionFields` | `public enum DbVersionFields { Version, Step, Date, Remarks, UserField }` | Field names for the database version tracking table (unspecified table name in source). |
| `Settings` | `Table` | `public const string Table = "tblSettings";` | Table name for user/application settings. |
| `Settings` | `UserFields` | `public enum UserFields { PropertyId, PropertyType, PropertyValue, UserId }` | Field names for the `tblSettings` table. |
| `VersionTable` | `TableName` | `public const string TableName = "tblDataPRODbVersion";` | Table name for version tracking (distinct from `DbVersions` table reference). |
| `VersionTable` | `Fields` | `public enum Fields { Version, Step, Date, Remarks, UserField }` | Field names for `tblDataPRODbVersion`. |
| `TestObjectChannelSettings` | `TableName` | `public const string TableName = "tblTestObjectChannelSettings";` | Table name for per-test-object channel configuration. |
| `TestObjectChannelSettings` | `Fields` | `public enum Fields { TestObjectSerial, ChannelId, Setting, SensorSerial }` | Field names for `tblTestObjectChannelSettings`. |
| `Tags` | `Table` | `public const string Table = "tblTags";` | Table name for tag definitions. |
| `Tags` | `TagFields` | `public enum TagFields { TagId, TagText, Obsolete }` | Field names for `tblTags`. |
| `Tags` | `TAGASSIGNMENTS_TABLE` | `public const string TAGASSIGNMENTS_TABLE = "TagAssignments";` | Table name for tag assignments (note: no `tbl` prefix). |
| `Tags` | `TagAssignmentFields` | `public enum TagAssignmentFields { ObjectID, ObjectType, TagID }` | Field names for `TagAssignments`. |
| `DigitalOutputSettings` | `Table` | `public const string Table = "tblTOMDigitalChannels";` | Table name for digital output channel settings. |
| `DigitalOutputSettings` | `Fields` | `public enum Fields { ChannelDescription, DelayMS, DurationMS, OutputMode, LimitDuration, LastModified, LastModifiedBy, Version, LocalOnly, DurationMSFloat, UserTags }` | Field names for `tblTOMDigitalChannels`. |
| `LabratoryDetails` | `Table` | `public const string Table = "tblLabratoryDetails";` | Table name for laboratory metadata (note: typo in table name: *Labratory* vs *Laboratory*). |
| `LabratoryDetails` | `LabratoryDetailsFields` | `public enum LabratoryDetailsFields { Name, LabratoryName, LabratoryContactName, LabratoryContactPhone, LabratoryContactFax, LabratoryContactEmail, LabratoryTestRefNumber, LabratoryProjectRefNumber, LastModified, LastModifiedBy, LocalOnly, Version }` | Field names for `tblLabratoryDetails`. |
| `Squib` | `Table` | `public const string Table = "tblTOMSquibChannels";` | Table name for squib (explosive device) channel settings. |
| `Squib` | `Fields` | `public enum Fields { SquibDescription, BypassCurrentFilter, BypassVoltageFilter, DelayMS, DurationMS, FireMode, ISOCode, MeasurementType, SquibOutputCurrent, SquibToleranceLow, SquibToleranceHigh, LimitDuration, ArticleId, LocalOnly, Version, LastModified, LastModifiedBy, UserValue1, UserValue2, UserValue3, UserTags }` | Field names for `tblTOMSquibChannels`. |
| `CalculatedChannels` | `Table` | `public const string Table = "tblCalculatedChannels";` | Table name for calculated channel definitions. |
| `CalculatedChannels` | `Fields` | `public enum Fields { Id, Operation, CalculatedChannelValueCode, InputChannelIds, CFCForInputChannels, CFCForOutput, TestSetupName, CCName }` | Field names for `tblCalculatedChannels`. <br> **Note**: Fields use `[DbTypeAttr(...)]` attributes (e.g., `Id` is `INTEGER PRIMARY KEY NOT NULL`). |
| `Users` | `USERS_TABLE` | `public const string USERS_TABLE = "DataPROUsers";` | Table name for user accounts (no `tbl` prefix). |
| `Users` | `UserFields` | `public enum UserFields { ID, UserName, DisplayName, Password, Role, LastModified, LastModifiedBy, LocalOnly }` | Field names for `DataPROUsers`. |
| `Users` | `UIITEMS_TABLE` | `public const string UIITEMS_TABLE = "UIITEMS";` | Table name for UI item definitions (no `tbl` prefix). |
| `Users` | `UIItemFields` | `public enum UIItemFields { ID, Name }` | Field names for `UIITEMS`. |
| `Users` | `USERUISETTINGS_TABLE` | `public const string USERUISETTINGS_TABLE = "UserUIItemSettings";` | Table name for per-user UI settings (no `tbl` prefix). |
| `Users` | `UserUIItemSettingFields` | `public enum UserUIItemSettingFields { UserId, UIItemID, Permission, Visible }` | Field names for `UserUIItemSettings`. |
| `LevelTriggers` | `Table` | `public const string Table = "tblLevelTriggers";` | Table name for level-triggering conditions. |
| `LevelTriggers` | `Fields` | `public enum Fields { TestSetupName, GroupSerialNumber, TestObjectChannelId, HardwareChannelId, SensorSerialNumber, GreaterThanEnabled, GreaterThanEU, LessThanEnabled, LessThanEU, InsideUpperEU, InsideLowerEU, OutsideUpperEU, OutsideLowerEU, TriggerInside, TriggerOutside }` | Field names for `tblLevelTriggers`. <br> **Note**: Fields use `[DbTypeAttr(...)]` attributes (e.g., `GreaterThanEnabled` is `BIT NOT NULL`). |
| `SensorDB` | `SensorCalibrationTable` | `public const string SensorCalibrationTable = "tblSensorCalibrations";` | Table name for sensor calibration records. |
| `SensorDB` | `SensorDataTable` | `public const string SensorDataTable = "tblSensors";` | Table name for sensor definitions. |
| `SensorDB` | `SensorModelsTable` | `public const string SensorModelsTable = "tblSensorModels";` | Table name for sensor model templates. |
| `SensorDB` | `SensorDataFields` | `public enum SensorDataFields { SerialNumber, UserSerialNumber, Model, ... }` (48 fields) | Field names for `tblSensors`. Includes metadata (e.g., `Version`, `LocalOnly`, `UserTags`, `Broken`). |
| `SensorDB` | `SensorModelFields` | `public enum SensorModelFields { Model, Manufacturer, UserPartNumber, ... }` (32 fields) | Field names for `tblSensorModels`. |
| `SensorDB` | `SensorCalibrationFields` | `public enum SensorCalibrationFields { SerialNumber, CalibrationDate, Username, ... }` (10 fields) | Field names for `tblSensorCalibrations`. |
| `SensorDB` | `SensorCalibrationRecordFields` | `public enum SensorCalibrationRecordFields { Sensitivity, Poly, AtCapacity, ... }` (7 fields) | Field names for calibration records *within* `tblSensorCalibrations` (likely stored as serialized data, e.g., BLOB). |
| `TestSetups` | `HardwareTable` | `public const string HardwareTable = "tblTestSetupHardware";` | Table for test setup–hardware associations. |
| `TestSetups` | `HardwareFields` | `public enum HardwareFields { TestSetupName, HardwareId, AddOrRemove }` | Field names for `tblTestSetupHardware`. `AddOrRemove` uses `0=remove, 1=add`. |
| `TestSetups` | `DASSettingsTable` | `public const string DASSettingsTable = "tblTestSetupDASSettings";` | Table name for DAQ settings (no fields enum provided). |
| `TestSetups` | `ChannelSettingsTable` | `public const string ChannelSettingsTable = "tblTestChannelSettings";` | Table name for test channel settings. |
| `TestSetups` | `ChannelSettingFields` | `public enum ChannelSettingFields { TestName, TestObjectName, ChannelId, Setting, SensorSerial }` | Field names for `tblTestChannelSettings`. |
| `TestSetups` | `TestSetupsTable` | `public const string TestSetupsTable = "tblTestSetups";` | Table name for test setup definitions. |
| `TestSetups` | `Fields` | `public enum Fields { SetupName, SetupDescription, AutomaticTestProgression, ... }` (64 fields) | Field names for `tblTestSetups`. Includes flags (`ROIDownload`, `ViewRealtime`), paths (`ExportFolder`), and behavior controls (`StrictDiagnostics`, `RequireConfirmationOnErrors`). |
| `TestSetups` | `TestSetupObjectsTable` | `public const string TestSetupObjectsTable = "tblTestSetupObjects";` | Table for test objects assigned to a test setup. |
| `TestSetups` | `TestSetupObjectFields` | `public enum TestSetupObjectFields { TestObjectSerialNumber, TestSetupName, TargetSampleRate, ... }` | Field names for `tblTestSetupObjects`. |
| `TestSetups` | `TestObjectMetaDataTable` | `public const string TestObjectMetaDataTable = "tblTestSetupObjectMetaData";` | Table for test object metadata key-value pairs. |
| `TestSetups` | `TestObjectMetaDataFields` | `public enum TestObjectMetaDataFields { TestObject, SetupName, PropName, PropValue, Optional, Version }` | Field names for `tblTestSetupObjectMetaData`. |
| `TestSetups` | `TestObjectTemplatesTable` | `public const string TestObjectTemplatesTable = "tblTestObjectTemplates";` | Table for test object templates. |
| `TestSetups` | `TestObjectTemplatesFields` | `public enum TestObjectTemplatesFields { TemplateName, Icon, Description, ... }` | Field names for `tblTestObjectTemplates`. Includes `CRC32`, `SysBuilt`, and `ParentTemplate`. |
| `TestSetups` | `TestObjectsTable` | `public const string TestObjectsTable = "tblTestObjects";` | Table for test object definitions. |
| `TestSetups` | `TestObjectsFields` | `public enum TestObjectsFields { SerialNumber, LastModifiedBy, LastModified, Template, ... }` | Field names for `tblTestObjects`. Tracks templates, embedding, and original serial numbers. |
| `TestSetups` | `TestGraphsTable` | `public const string TestGraphsTable = "tblTestGraphs";` | Table for test graph configurations. |
| `TestSetups` | `GraphFields` | `public enum GraphFields { GraphName, GraphDescription, TemplateName, Channels, UseDomainMin, DomainMin, ... }` | Field names for `tblTestGraphs`. Includes axis ranges and thresholds. |

---

### 3. Invariants  

- **No instance state**: All classes are `abstract` and contain only `const` and `enum` members. No runtime behavior or state is defined.  
- **Case sensitivity**: Table and field names are case-sensitive string literals (e.g., `tblSettings`, not `tblsettings`).  
- **Naming consistency**:  
  - Table names use `tbl` prefix for most tables (e.g., `tblSensors`, `tblTestSetups`), but exceptions exist: `DataPROUsers`, `UIITEMS`, `UserUIItemSettings`, `TagAssignments`.  
  - Enum names follow `XxxFields` or `XxxFields` pattern (e.g., `SensorDataFields`, `UserFields`).  
- **Field ordering**: Enum values are *not* explicitly assigned integer values (except `SensorDataFields.SerialNumber = 1`), so their underlying values are sequential starting from `0` (or `1` for `SerialNumber`).  
- **Type annotations**: `[DbTypeAttr(...)]` attributes (e.g., on `CalculatedChannels.Id` and `LevelTriggers` fields) are present in source but are *not* part of the runtime type system—likely custom attributes for code generation or ORM mapping. Their presence does not affect the enum/const definitions themselves.  

---

### 4. Dependencies  

- **No external dependencies**: None of the files reference `using` directives or external types. All types are self-contained within the `DTS.Storage` or `Storage.Classes.Abstract` namespaces.  
- **Consumers**: This module is intended to be referenced by data access layers, migration scripts, or ORM configurations elsewhere in the codebase (e.g., to build SQL queries like `SELECT {TestSetups.Fields.SetupName} FROM {TestSetups.TestSetupsTable}`).  
- **Namespace overlap**: Two namespaces are used: `DTS.Storage` (most files) and `Storage.Classes.Abstract` (`DbVersions.cs`). This suggests possible namespace migration or legacy coexistence.  

---

### 5. Gotchas  

- **Typo in table name**: `LabratoryDetails` class references `"tblLabratoryDetails"` (misspelled *Labratory*). This is likely intentional to match an existing database schema.  
- **Inconsistent table prefixes**: Most tables use `tbl` prefix, but `DataPROUsers`, `UIITEMS`, `UserUIItemSettings`, and `TagAssignments` do not.  
- **Enum name collisions**: `UserFields` is defined in both `Settings` and `Users` classes, but with different fields (`PropertyId` vs `ID`, `UserName`, etc.). This implies separate contexts (settings vs. user accounts).  
- **Missing table references**: `DbVersions` defines `DbVersionFields` but *no table name constant*; `VersionTable` defines `TableName` and `Fields`, but the fields are identical to `DbVersions.DbVersionFields`. This suggests potential redundancy or historical duplication.  
- **`AddOrRemove` semantics**: In `HardwareFields`, `AddOrRemove = 0` means *remove*, `= 1` means *add*. This inverse naming may be counterintuitive.  
- **`SensorCalibrationRecordFields`**: This enum is defined but no corresponding table name constant is provided. Given the context, calibration records are likely stored as a serialized blob in `tblSensorCalibrations.CalibrationRecords`, not as a separate table.  
- **`CalculatedChannels.InputChannelIds`**: Typed as `BLOB` (likely storing a serialized list of channel IDs). Consumers must handle serialization/deserialization.  
- **`CalculatedChannels.CFCForInputChannels` / `CFCForOutput`**: Field names suggest "Calculated Function Chain" (CFC) logic, but no documentation of the format or execution engine is provided here.  

None identified beyond those listed.