TDASchema

From RemObjects Software

This is a Data Abstract Architecture entry
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Overview

The TDASchema component represents the complete or partial schema of your database, including the data tables and commands defined for it, and relationships between data tables.

While you can edit the contents of a schema from code or in Object Inspector using the Commands, Datasets, Relationships and UpdateRules collection properties, you will usually edit your schemaby double-clicking the component to launch the Schema Modeler.

File

uDAClasses

Declaration

TDASchema = class(TDAStreamableComponent, IDASchema, IDAHasDataDictionary);

Hierarchy

• TDAStreamableComponent
  • TDASchema

Properties

Property	Type	Description
Commands	TDASQLCommandCollection	Provides access to collection of all the TDASQLCommands defined in the schema.
ConnectionManager	TDAConnectionManager	Sets the TDAConnectionManager component that defines the connection or connections for this schema. When editing the schema in Schema Modeler, the connections will appear in the Connections Pane in the upper right corner.
DataDictionary	TDADataDictionary	Specifies the TDADataDictionary component used to store the data dictionary for this schema. If this property is unassigned, the Data Dictionary features in Schema Modeler will be disabled.
Datasets	TDADatasetCollection	Holds a collection of all the TDADatasets (a.k.a. Data Tables) defined in the schema.
Diagrams	TDADiagrams	Defines the TDADiagrams component used to store diagrams for this schema. If this property is unassigned, the diagramming features in Schema Modeler will be disabled.
RelationShips	TDADatasetRelationshipCollection	Maintains a collection of all the TDADatasetRelationships defined in the schema.
UpdateRules	TDAUpdateRuleCollection	Provides access to collection of all the TDAUpdateRules defined in the schema.

Methods

Method	Description
Clear	Clears the entire schema, removing all Commands, Datasets, Relationships and UpdateRules.

See Also

• Schema Modeler
• TDAConnectionManager
• Lists
  • Class List (Data Abstract for Delphi)
  • Interface List (Data Abstract for Delphi)
  • Enum List (Data Abstract for Delphi)
  • Data Types (Data Abstract)
  • File Types (Data Abstract)

Product: RemObjects Data Abstract
Current version: Data Abstract 'Vinci' (5.0)

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