, , - Delphi. Delphi , Pascal- , .
. .mdb, Microsoft Access.
: . , . , . .
:
1. . : , , , .
2. . : , ,
3. : , , ( ) . , , . , ( ), . ( ) .
.
腻.
, , .
, Delphi, (, Delphi). base_vikonda ( ).
( SQL. , , ).
( ): key_field, key_field1 .. FIO_client, Product_Name Date ( , ). : . , FIO_client , Date , Query_value ( ) .
Access . , : product_query_name, client_query_name product_selling_name.
|
|
ADO Delphi
ADO (Active Data Objects) - Microsoft. (.. MDAC - Microsoft Data Access Components) - ODBC OLE DB.
ADO Access MS SQL Oracle, Microsoft Active Directory Service, XML - ..
ADO - ODBC, OLE DB.
: Connection, Recordset, Command, Parameter, Field, Error Property. ADO Delphi , , Delphi .
. , Connection rror, . Recordset - Field, . Command - Parameter, Execute , Error .. (Connection, Recordset, Command) (Error, Field, Parameter, Property) ADO.
Connection
Connection - . , . Error, , Connection. , Command Recordset. Connection .
Recordset
Recordset . Execute - Command. Field, . Recordset , , , ( ), (.. ). , , .
Command
Command SQL -. Parameter, , . . Error.
Commands Delphi - TADOCommand, TADOQuery TADOTable TADOStoredProc. , , Data Access, TADOCommand TADOQuery .
Parameter
Parameter , Execute Command - , (, , ). Command Parameter .
|
|
Error
Error , , , Connection, Command Recordset.
Field
. , Recordset Field. Field Property, .
Property
Property ADO, Connection Error. , . (.. ) : Name, Type, Value, Attributes. - . Property ADO.