This unit contains base classes for accessing databases. 
Classes
  
    | Name |     Description |   
  
    | 
 TCRCursor      | 
    
A base class for classes that work with database cursors.      | 
  
Types
Enumerations
  
    | Name |     Description |   
  
    | 
 TCRIsolationLevel      | 
    
Specifies how to handle transactions containing database modifications.      | 
  
  
    | 
 TCRTransactionAction      | 
    
Specifies the transaction behaviour when it is destroyed while being active, or when one of its connections is closed with the active transaction.      | 
  
  
    | 
 TCursorState      | 
    
Used to set cursor state      |