Accessing the Database Server: ODBC, OLE DB, and ADO

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Presentation transcript:

Accessing the Database Server: ODBC, OLE DB, and ADO

Typical Web Server Page 340

ODBC Open Database Connectivity; DBMS-independent means for processing relational database data ORACLE SYBASE INFORMIX Page 342

Role of ODBC Standard Page 340

ODBC Terminology Data source the database, its associated DBMS, operating system, and network platform Driver manager intermediary between the application and DBMS drivers Driver processes ODBC requests and submits SQL statements to a data source Page 343

ODBC Architecture Page 343

Conformance Levels ODBC concerned with API application program interface SQL Minimum Core Extended Page 344

ODBC Data Source Types File shared among database users System local to a single computer User only available to the user who created it Page 346

OLE DB Object Linking and Embedding Database; Provides an object-oriented interface to data of almost any type and used as an interface to ODBC and non-relational data Page 348

Object Terminology Abstraction a generalization of something Method actions that an object can perform Property a characteristic of a recordset abstraction Collection object that contains a group of other objects Page 348

Role of OLE DB Page 341

OLE DB Goals Page 349

OLE DB Data Providers Page 350

ADO ActiveX Data Objects; an interface that enables programmers in almost any language (including scripting) to access OLE DB functionality Page 351

Role of ADO Page 342

ADO Object Model Page 352