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In Jet versions before version 4, a page locking model is used, and in Jet 4, a record locking model is employed. Microsoft databases are organized into data "pages", which are fixed-length (2 kB before Jet 4, 4 kB in Jet 4) data structures. Data is stored in "records" of variable length that may take up less or more than one page.
The MDAC 1.0 stack consisted of ODBC 3.0, OLE DB 1.1, ADO 1.0, and the Advanced Data Connector (ADC) 1.0 – which according to Microsoft was the precursor to the Remote Data Service of MDAC 1.5. It also included ODBC drivers for Access/Jet, SQL Server and Oracle databases.
OLE DB (Object Linking and Embedding, Database, sometimes written as OLEDB or OLE-DB) is an API designed by Microsoft that allows accessing data from a variety of sources in a uniform manner. The API provides a set of interfaces implemented using the Component Object Model (COM); it is otherwise unrelated to OLE .
4.0 SP1 Windows 95, Windows NT 4.0, Windows 98, Windows 2000 [60] Office 2000 Professional, Premium and Developer Access 2002: 10.0: May 31, 2001 Windows NT 4.0 SP6, Windows 98, Windows 2000, Windows Me [61] Office XP Professional and Developer Access 2003: 11.0: November 27, 2003 Windows 2000 SP3 or later, Windows XP, Windows Vista, Windows 7 [62]
DAO were originally called "VT Objects.: DAO 1.0 came up in November 1992 as part of Access 1.0. In version 3.5 it was able to bypass the Jet engine all together and directly access ODBC data sources, including Microsoft SQL Server and other enterprise database systems. DAO 3.6 shipped with Jet 4.0.
Third parties have also developed such, notably OpenLink Software whose 64-bit OLE DB Provider for ODBC Data Sources filled the gap when Microsoft initially deprecated this bridge for their 64-bit OS. [32] (Microsoft later relented, and 64-bit Windows starting with Windows Server 2008 and Windows Vista SP1 have shipped with a 64-bit version of ...
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JET Red before version 4.0 supports only page-level locking, while ESE and JET Red version 4.0 supports record-level locking. JET Red supports a wide variety of query interfaces, including ODBC and OLE DB. ESE does not ship with a query engine but instead relies on applications to write their own queries as C ISAM code. JET Red has a maximum ...